diff --git a/src/framework/core.c b/src/framework/core.c
index e5c7230..af5cf7e 100644
--- a/src/framework/core.c
+++ b/src/framework/core.c
@@ -154,6 +154,7 @@ ProgStatus =
 #define chsrc_debug(str)   xy_warn(App_Name "(DEBUG)",str)
 #define chsrc_verbose(str) xy_info(App_Name "(VERBOSE)",str)
 
+#define faint(str)    xy_str_to_faint(str)
 #define red(str)      xy_str_to_red(str)
 #define blue(str)     xy_str_to_blue(str)
 #define green(str)    xy_str_to_green(str)
@@ -637,11 +638,11 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
       Source_t src = sources[i];
 
       SourceProvider_t *provider = src.provider;
-      SpeedMeasureInfo_t smi = provider->smi;
+      ProviderSpeedMeasureInfo_t psmi = provider->psmi;
 
-      bool skip = smi.skip;
+      bool skip = psmi.skip;
 
-      const char *url = smi.url;
+      const char *url = psmi.url;
 
       if (!skip && NULL==url)
         // 这种情况应当被视为bug，但是我们目前还是软处理
@@ -664,8 +665,8 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
               speed = -1024*1024*1024;
               if (!src.url)
                 {
-                  smi.skip_reason_CN = "上游默认源URL未知，请帮助补充";
-                  smi.skip_reason_EN = "The default upstream source URL is unknown, please help to add";
+                  psmi.skip_reason_CN = "上游默认源URL未知，请帮助补充";
+                  psmi.skip_reason_EN = "The default upstream source URL is unknown, please help to add";
                 }
             }
           else if (xy_streql ("user", provider->code))
@@ -682,7 +683,7 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
           speed_records[i] = speed;
 
           const char *msg = ENGLISH ? provider->abbr : provider->name;
-          const char *skip_reason = ENGLISH ? smi.skip_reason_EN : smi.skip_reason_CN;
+          const char *skip_reason = ENGLISH ? psmi.skip_reason_EN : psmi.skip_reason_CN;
           if (NULL==skip_reason)
             {
               skip_reason = ENGLISH ? "SKIP for no reason" : "无理由跳过";
@@ -694,13 +695,17 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
         {
           const char *msg = ENGLISH ? provider->abbr : provider->name;
 
+          bool is_accurate = provider->psmi.accurate;
+          char *accurate_msg = CHINESE ? (is_accurate ? "[精准测速]" :  faint("[模糊测速]"))
+                                       : (is_accurate ? "[accurate]" : faint("[rough]"));
+
           if (xy_streql ("upstream", provider->code))
             {
-              measure_msgs[i] = xy_strjoin (5, "  ^ ", msg, " (", src.url, ") ... ");
+              measure_msgs[i] = xy_strjoin (7, "  ^ ", msg, " (", src.url, ") ", accurate_msg, " ... ");
             }
           else
             {
-              measure_msgs[i] = xy_strjoin (3, "  - ", msg, " ... ");
+              measure_msgs[i] = xy_strjoin (5, "  - ", msg, " ", accurate_msg, " ... ");
             }
 
           print (measure_msgs[i]);
diff --git a/src/framework/mirror.c b/src/framework/mirror.c
index 0599357..74573dd 100644
--- a/src/framework/mirror.c
+++ b/src/framework/mirror.c
@@ -9,7 +9,7 @@
  *               |  Mikachu2333  <mikachu.23333@zohomail.com>
  *               |
  * Created On    : <2023-08-29>
- * Last Modified : <2025-06-20>
+ * Last Modified : <2025-07-11>
  *
  * 通用镜像站
  * ------------------------------------------------------------*/
@@ -29,13 +29,13 @@
 MirrorSite_t MirrorZ =
 {
   "mirrorz", "MirrorZ",  "MirrorZ 校园网镜像站", "https://mirrors.cernet.edu.cn/",
-  {SKIP, "功能特殊无法测速，跳过", "SKIP because of its special function"}
+  {SKIP, "功能特殊无法测速，跳过", "SKIP because of its special function", NULL, ROUGH}
 },
 
 Tuna =
 {
   "tuna", "TUNA", "清华大学开源软件镜像站", "https://mirrors.tuna.tsinghua.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.tuna.tsinghua.edu.cn/speedtest/1000mb.bin"}
+  {NotSkip, NA, NA, "https://mirrors.tuna.tsinghua.edu.cn/speedtest/1000mb.bin", ROUGH}
 },
 
 /**
@@ -46,67 +46,67 @@ Tuna =
 Sjtug_Zhiyuan =
 {
   "sjtu-zy", "SJTUG-zhiyuan", "上海交通大学致远镜像站", "https://mirrors.sjtug.sjtu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.sjtug.sjtu.edu.cn/ctan" Big_File_ctan}
+  {NotSkip, NA, NA, "https://mirrors.sjtug.sjtu.edu.cn/ctan" Big_File_ctan, ROUGH}
 },
 
 Sjtug_Siyuan =
 {
   "sjtu-sy", "SJTUG-siyuan", "上海交通大学思源镜像站", "https://mirror.sjtu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirror.sjtu.edu.cn/ctan" Big_File_ctan}
+  {NotSkip, NA, NA, "https://mirror.sjtu.edu.cn/ctan" Big_File_ctan, ROUGH}
 },
 
 Zju =
 {
   "zju", "ZJU", "浙江大学开源软件镜像站", "https://mirrors.zju.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.zju.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.zju.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Lzuoss =
 {
   "lzu", "LZUOSS", "兰州大学开源社区镜像站", "https://mirror.lzu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirror.lzu.edu.cn/CTAN" Big_File_ctan}
+  {NotSkip, NA, NA, "https://mirror.lzu.edu.cn/CTAN" Big_File_ctan, ROUGH}
 },
 
 Jlu =
 {
   "jlu", "JLU", "吉林大学开源镜像站", "https://mirrors.jlu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.jlu.edu.cn/_static/speedtest.bin"}
+  {NotSkip, NA, NA, "https://mirrors.jlu.edu.cn/_static/speedtest.bin", ROUGH}
 },
 
 Bfsu =
 {
   "bfsu", "BFSU", "北京外国语大学开源软件镜像站", "https://mirrors.bfsu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.bfsu.edu.cn/speedtest/1000mb.bin"}
+  {NotSkip, NA, NA, "https://mirrors.bfsu.edu.cn/speedtest/1000mb.bin", ROUGH}
 },
 
 Pku =
 {
   "pku", "PKU", "北京大学开源镜像站", "https://mirrors.pku.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.pku.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.pku.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Bjtu =
 {
   "bjtu", "BJTU", "北京交通大学自由与开源软件镜像站", "https://mirror.bjtu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirror.bjtu.edu.cn/archlinux" Big_File_archlinux}
+  {NotSkip, NA, NA, "https://mirror.bjtu.edu.cn/archlinux" Big_File_archlinux, ROUGH}
 },
 
 Sustech =
 {
   "sustech", "SUSTech", "南方科技大学开源软件镜像站", "https://mirrors.sustech.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.sustech.edu.cn/site/speedtest/1000mb.bin"}
+  {NotSkip, NA, NA, "https://mirrors.sustech.edu.cn/site/speedtest/1000mb.bin", ROUGH}
 },
 
 Ustc =
 {
   "ustc", "USTC", "中国科学技术大学开源镜像站", "https://mirrors.ustc.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.ustc.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.ustc.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Hust =
 {
   "hust", "HUST", "华中科技大学开源镜像站", "https://mirrors.hust.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.hust.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.hust.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 // 速度暂时处于10位以后或者无测速报告，但是目前可用的源
@@ -114,43 +114,43 @@ Hust =
 Iscas =
 {
   "iscas", "ISCAS", "中科院软件所智能软件研究中心开源镜像站", "https://mirror.iscas.ac.cn/",
-  {NotSkip, NA, NA, "https://mirror.iscas.ac.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirror.iscas.ac.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Scau =
 {
   "scau", "SCAU", "华南农业大学开源软件镜像站", "https://mirrors.scau.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.scau.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.scau.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 NJTech =
 {
   "njtech", "NJTech", "南京工业大学开源软件镜像站", "https://mirrors.njtech.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.njtech.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.njtech.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Nyist =
 {
   "nyist", "NYIST", "南阳理工学院开源软件镜像站", "https://mirror.nyist.edu.cn/",
-  {NotSkip, NA, NA, "https://mirror.nyist.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirror.nyist.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Sdu =
 {
   "sdu", "SDU", "山东大学镜像站", "https://mirrors.sdu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.sdu.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.sdu.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Cqupt =
 {
   "cqupt", "CQUPT", "重庆邮电大学开源镜像站", "https://mirrors.cqupt.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.cqupt.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.cqupt.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Nju =
 {
   "nju", "NJU", "南京大学开源镜像站", "https://mirrors.nju.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.nju.edu.cn/archlinux" Big_File_archlinux}
+  {NotSkip, NA, NA, "https://mirrors.nju.edu.cn/archlinux" Big_File_archlinux, ROUGH}
 },
 
 /**
@@ -159,7 +159,7 @@ Nju =
 Cqu =
 {
   "cqu", "CQU", "重庆大学开源软件镜像站", "https://mirrors.cqu.edu.cn/",
-  {NotSkip, NA, NA, "https://mirrors.cqu.edu.cn/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.cqu.edu.cn/ubuntu-releases" Big_File_ubuntu, ROUGH}
 };
 
 /**
@@ -168,71 +168,71 @@ Cqu =
 MirrorSite_t Ali =
 {
   "ali", "Ali OPSX Public", "阿里巴巴开源镜像站(公网)", "https://developer.aliyun.com/mirror/",
-  {NotSkip, NA, NA, "https://mirrors.aliyun.com/ubuntu/ls-lR.gz"} // 31MB左右
+  {NotSkip, NA, NA, "https://mirrors.aliyun.com/ubuntu/ls-lR.gz", ROUGH} // 31MB左右
 },
 /*
 // https://mirrors.cloud.aliyuncs.com/
 Ali_ECS_VPC =
 {
   "ali-ECS-VPC", "Ali OPSX ECS VPC", "阿里巴巴开源镜像站(ECS VPC网络)", "https://developer.aliyun.com/mirror/",
-  {NotSkip, NA, NA, "https://mirrors.cloud.aliyuncs.com/deepin-cd" Big_File_deepin}
+  {NotSkip, NA, NA, "https://mirrors.cloud.aliyuncs.com/deepin-cd" Big_File_deepin, ROUGH}
 },
 
 // https://mirrors.aliyuncs.com/
 Ali_ECS_classic =
 {
   "ali-ECS", "Ali OPSX ECS", "阿里巴巴开源镜像站(ECS 经典网络)", "https://developer.aliyun.com/mirror/",
-  {NotSkip, NA, NA, "https://mirrors.aliyuncs.com/deepin-cd" Big_File_deepin}
+  {NotSkip, NA, NA, "https://mirrors.aliyuncs.com/deepin-cd" Big_File_deepin, ROUGH}
 },
 */
 
 Tencent =
 {
   "tencent", "Tencent Public", "腾讯软件源(公网)", "https://mirrors.tencent.com/",
-  {NotSkip, NA, NA, "https://mirrors.cloud.tencent.com/mariadb/mariadb-12.1.0/winx64-packages/mariadb-12.1.0-winx64-debugsymbols.zip"} // 110MB左右
+  {NotSkip, NA, NA, "https://mirrors.cloud.tencent.com/mariadb/mariadb-12.1.0/winx64-packages/mariadb-12.1.0-winx64-debugsymbols.zip", ROUGH} // 110MB左右
 },
 /*
 Tencent_Intra =
 {
   "tencent-intra", "Tencent Intranet",  "腾讯软件源(内网)", "https://mirrors.tencent.com/",
-  {NotSkip, NA, NA, "https://mirrors.cloud.tencentyun.com/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.cloud.tencentyun.com/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 */
 
 Huawei =
 {
   "huawei",  "Huawei Cloud", "华为开源镜像站",  "https://mirrors.huaweicloud.com/",
-  {NotSkip, NA, NA, "https://mirrors.huaweicloud.com/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.huaweicloud.com/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 
 Volcengine =
 {
   "volc", "Volcengine", "火山引擎开源软件镜像站(公网)", "https://developer.volcengine.com/mirror/",
-  {NotSkip, NA, NA, "https://mirrors.volces.com/ubuntu-releases" Big_File_ubuntu}
+  {NotSkip, NA, NA, "https://mirrors.volces.com/ubuntu-releases" Big_File_ubuntu, ROUGH}
 },
 /*
 Volceengine_Intra =
 {
   "volc-intra",  "Volcengine Intranet", "火山引擎开源软件镜像站(内网)",
   "https://developer.volcengine.com/mirror/",
-  "https://mirrors.ivolces.com/ubuntu-releases" Big_File_ubuntu },
+  "https://mirrors.ivolces.com/ubuntu-releases" Big_File_ubuntu, ROUGH},
 */
 
 
 /**
- * @note 2026-06-20 网易开源镜像站的速度始终过低，不建议再使用
+ * @note 2025-06-20 网易开源镜像站的速度始终过低，不建议再使用
  */
 Netease =
 {
   "netease", "Netease", "网易开源镜像站", "https://mirrors.163.com/",
-  {NotSkip, NA, NA, "https://mirrors.163.com/deepin-cd" Big_File_deepin}
+  {NotSkip, NA, NA, "https://mirrors.163.com/deepin-cd" Big_File_deepin, ROUGH}
 },
 
 /**
- * @note 2026-06-20 搜狐开源镜像站的速度始终过低，不建议再使用
+ * @note 2025-06-20 搜狐开源镜像站的速度始终过低，不建议再使用
  */
 Sohu =
 {
   "sohu", "SOHU", "搜狐开源镜像站", "https://mirrors.sohu.com/",
-  {NotSkip, NA, NA, "https://mirrors.sohu.com/deepin-cd" Big_File_deepin}
+  {NotSkip, NA, NA, "https://mirrors.sohu.com/deepin-cd" Big_File_deepin, ROUGH}
 };
diff --git a/src/framework/struct.h b/src/framework/struct.h
index 6904839..d8921b0 100644
--- a/src/framework/struct.h
+++ b/src/framework/struct.h
@@ -7,32 +7,36 @@
  * Contributors  : Shengwei Chen <414685209@qq.com>
  *               |
  * Created On    : <2023-08-29>
- * Last Modified : <2024-12-18>
+ * Last Modified : <2025-07-11>
  *
  * chsrc struct
  * ------------------------------------------------------------*/
 
-typedef struct SpeedMeasureInfo_t
+typedef struct ProviderSpeedMeasureInfo_t
 {
   bool  skip;           /* 是否默认跳过 */
   char *skip_reason_CN; /* 跳过的原因（中文）*/
   char *skip_reason_EN; /* 跳过的原因（英文）*/
   char *url;            /* 测速链接 */
+  bool  accurate;       /* 是否为精准测速，上游源和专用镜像站为true，通用镜像站为false*/
 }
-SpeedMeasureInfo_t;
+ProviderSpeedMeasureInfo_t;
 
 #define SKIP    true
 #define NotSkip false
 #define ToFill  NULL
 #define NA		  NULL
 
+#define ACCURATE true
+#define ROUGH    false
+
 typedef struct SourceProvider_t
 {
   const char *code; /* 用于用户指定某一 Provider */
   const char *abbr; /* 需要使用 Provider 的英文名时，用这个代替，因为大部分 Provider 没有提供正式的英文名 */
   const char *name; /* Provider 中文名 */
   const char *site; /* Provider 首页   */
-  SpeedMeasureInfo_t smi;
+  ProviderSpeedMeasureInfo_t psmi;
 }
 SourceProvider_t;
 
@@ -43,16 +47,16 @@ SourceProvider_t UpstreamProvider =
   /* 引入新的上游默认源时，请使下面第一行的前三个字段保持不变，只添加第四个字段，可使用 def_upstream 宏 */
   "upstream", "Upstream", "上游默认源", NULL,
   /* 引入新的上游默认源时，请完全修改下面这个结构体，可使用 def_need_measure_info 宏 */
-  {SKIP, "URL未知，邀您参与贡献!", "URL unknown, welcome to contribute!", NULL}
+  {SKIP, "URL未知，邀您参与贡献!", "URL unknown, welcome to contribute!", NULL, ACCURATE}
 };
 
 #define def_upstream            "upstream", "Upstream", "上游默认源"
-#define def_need_measure_info   {SKIP, "缺乏较大的测速对象，邀您参与贡献!", "Lack of large object URL, welcome to contribute!", NULL}
+#define def_need_measure_info   {SKIP, "缺乏较大的测速对象，邀您参与贡献!", "Lack of large object URL, welcome to contribute!", NULL, ACCURATE}
 
 SourceProvider_t UserDefinedProvider =
 {
   "user", "用户自定义", "用户自定义", NULL,
-  {SKIP, "用户自定义源不测速", "SKIP for user-defined source", NULL}
+  {SKIP, "用户自定义源不测速", "SKIP for user-defined source", NULL, ACCURATE}
 };
 
 
@@ -62,7 +66,11 @@ typedef struct Source_t
     SourceProvider_t *provider;
     MirrorSite_t     *mirror;
   };
+  /* 用于换源的 URL */
   char *url;
+
+  /* 精准测速 URL*/
+  char *accurate_speed_measure_url;
 }
 Source_t;
 
diff --git a/src/recipe/lang/Dart/common.h b/src/recipe/lang/Dart/common.h
index 6358240..a58683f 100644
--- a/src/recipe/lang/Dart/common.h
+++ b/src/recipe/lang/Dart/common.h
@@ -6,11 +6,11 @@
  *                |
  * Created On     : <2025-04-15>
  * Major Revision :      1
- * Last Modified  : <2025-04-15>
+ * Last Modified  : <2025-07-11>
  * ------------------------------------------------------------*/
 
 static MirrorSite_t FlutterCN =
 {
   "cfug", "CFUG", "Flutter 社区", "https://flutter.cn/",
-  {NotSkip, NA, NA, "https://storage.flutter-io.cn/flutter_infra_release/releases/stable/linux/flutter_linux_v1.0.0-stable.tar.xz"} // 231 MB
+  {NotSkip, NA, NA, "https://storage.flutter-io.cn/flutter_infra_release/releases/stable/linux/flutter_linux_v1.0.0-stable.tar.xz", ACCURATE} // 231 MB
 };
diff --git a/src/recipe/lang/Go.c b/src/recipe/lang/Go.c
index 79e05a6..4c837af 100644
--- a/src/recipe/lang/Go.c
+++ b/src/recipe/lang/Go.c
@@ -6,7 +6,7 @@
  *                |
  * Created On     : <2023-08-30>
  * Major Revision :      1
- * Last Modified  : <2024-12-18>
+ * Last Modified  : <2025-07-11>
  * ------------------------------------------------------------*/
 
 static SourceProvider_t pl_go_upstream =
@@ -18,13 +18,13 @@ static SourceProvider_t pl_go_upstream =
 static MirrorSite_t GoProxyCN =
 {
   "goproxy.cn", "Goproxy.cn", "Goproxy.cn (七牛云)", "https://goproxy.cn/",
-  {NotSkip, NA, NA, "https://goproxy.cn/github.com/aws/aws-sdk-go/@v/v1.45.2.zip"} // 30 MB
+  {NotSkip, NA, NA, "https://goproxy.cn/github.com/aws/aws-sdk-go/@v/v1.45.2.zip", ACCURATE} // 30 MB
 },
 
 GoProxyIO =
 {
   "goproxy.io", "GOPROXY.IO", "GOPROXY.IO", "https://goproxy.io/",
-  {NotSkip, NA, NA, "https://goproxy.io/github.com/aws/aws-sdk-go/@v/v1.45.2.zip"} // 30 MB
+  {NotSkip, NA, NA, "https://goproxy.io/github.com/aws/aws-sdk-go/@v/v1.45.2.zip", ACCURATE} // 30 MB
 };
 
 
diff --git a/src/recipe/lang/Lua.c b/src/recipe/lang/Lua.c
index 6ae7cf9..5f8ec1a 100644
--- a/src/recipe/lang/Lua.c
+++ b/src/recipe/lang/Lua.c
@@ -10,7 +10,7 @@
 static MirrorSite_t Api7 =
 {
   "api7", "api7.ai", "深圳支流科技有限公司", "https://www.apiseven.com/",
-  {SKIP, ToFill, ToFill, NULL}
+  {SKIP, ToFill, ToFill, NULL, ROUGH}
 };
 
 
diff --git a/src/recipe/lang/Node.js/common.h b/src/recipe/lang/Node.js/common.h
index 89ab597..486c4b5 100644
--- a/src/recipe/lang/Node.js/common.h
+++ b/src/recipe/lang/Node.js/common.h
@@ -12,14 +12,14 @@
 static SourceProvider_t pl_nodejs_npm_upstream =
 {
   def_upstream, "https://www.npmjs.com/",
-  {NotSkip, NA, NA, "https://registry.npmjs.org/@tensorflow/tfjs/-/tfjs-4.22.0.tgz"}
+  {NotSkip, NA, NA, "https://registry.npmjs.org/@tensorflow/tfjs/-/tfjs-4.22.0.tgz", ACCURATE}
 };
 
 static MirrorSite_t NpmMirror =
 {
   "npmmirror", "npmmirror", "npmmirror (阿里云赞助)", "https://npmmirror.com/",
   // 注意，下面这个是跳转后的地址，不确定未来会不会改变
-  {NotSkip, NA, NA, "https://cdn.npmmirror.com/packages/%40tensorflow/tfjs/4.22.0/tfjs-4.22.0.tgz"} // 29MB
+  {NotSkip, NA, NA, "https://cdn.npmmirror.com/packages/%40tensorflow/tfjs/4.22.0/tfjs-4.22.0.tgz", ACCURATE} // 29MB
 };
 
 /**
diff --git a/src/recipe/lang/NuGet.c b/src/recipe/lang/NuGet.c
index bc31c49..8713683 100644
--- a/src/recipe/lang/NuGet.c
+++ b/src/recipe/lang/NuGet.c
@@ -10,7 +10,7 @@
 static MirrorSite_t NugetOrg =
 {
   "nuget.org", "NuGet Org", "Nuget Organization", "https://www.nuget.org/",
-  {SKIP, ToFill, ToFill, NULL}
+  {SKIP, ToFill, ToFill, NULL, ROUGH}
 };
 
 /**
diff --git a/src/recipe/lang/Ruby.c b/src/recipe/lang/Ruby.c
index cba3f2c..4c27543 100644
--- a/src/recipe/lang/Ruby.c
+++ b/src/recipe/lang/Ruby.c
@@ -5,19 +5,19 @@
  * Contributors  :  Nil Null  <nil@null.org>
  *               |
  * Created On    : <2023-08-29>
- * Last Modified : <2024-12-18>
+ * Last Modified : <2025-07-11>
  * ------------------------------------------------------------*/
 
 static SourceProvider_t pl_ruby_upstream =
 {
   def_upstream, "https://rubygems.org",
-  {NotSkip, NA, NA, "https://rubygems.org/gems/nokogiri-1.15.0-java.gem"}
+  {NotSkip, NA, NA, "https://rubygems.org/gems/nokogiri-1.15.0-java.gem", ACCURATE}
 };
 
 static MirrorSite_t RubyChina =
 {
   "rubychina", "RubyChina", "Ruby China 社区", "https://gems.ruby-china.com/",
-  {NotSkip, NA, NA, "https://gems.ruby-china.com/rubygems/gems/nokogiri-1.15.0-java.gem"} // 9.9 MB
+  {NotSkip, NA, NA, "https://gems.ruby-china.com/rubygems/gems/nokogiri-1.15.0-java.gem", ACCURATE} // 9.9 MB
 };
 
 /**
diff --git a/src/recipe/lang/Rust/common.h b/src/recipe/lang/Rust/common.h
index 484b480..16114e9 100644
--- a/src/recipe/lang/Rust/common.h
+++ b/src/recipe/lang/Rust/common.h
@@ -4,11 +4,11 @@
  * File Authors  : Aoran Zeng <ccmywish@qq.com>
  * Contributors  :  Nil Null  <nil@null.org>
  * Created On    : <2024-10-02>
- * Last Modified : <2024-11-21>
+ * Last Modified : <2025-07-11>
  * ------------------------------------------------------------*/
 
 static MirrorSite_t RsProxyCN =
 {
   "rsproxycn", "RsProxy.cn", "字节跳动基础架构Dev Infra", "https://rsproxy.cn/",
-  {NotSkip, NA, NA, "https://rsproxy.cn/api/v1/crates/windows/0.58.0/download"}
+  {NotSkip, NA, NA, "https://rsproxy.cn/api/v1/crates/windows/0.58.0/download", ACCURATE}
 };
diff --git a/src/recipe/recipe-template.c b/src/recipe/recipe-template.c
index bdcf34c..9c98f37 100644
--- a/src/recipe/recipe-template.c
+++ b/src/recipe/recipe-template.c
@@ -42,12 +42,14 @@
  * 定义专服务于该target的镜像站，该例数据为虚拟填充
  */
 static MirrorSite_t
-RubyMetric = {"rbmt",                   // chsrc set <target> rbmt
+RubyMetric = {"rbmt",                   // 该镜像站的 code, 可以这么使用: chsrc set <target> rbmt
               "RubyMetric",             // 该镜像站的缩写
               "RubyMetric.com",         // 该镜像站的全名
               "https://rubymetirc.com", // 镜像站首页
                                         // 镜像站某个较大的可下载物的下载链接，用于测速
-              "https://rubymetirc.com/target/aws/aws-sdk-go/@v/v1.45.2.zip"};
+              "https://rubymetirc.com/target/aws/aws-sdk-go/@v/v1.45.2.zip",
+
+              ACCURATE};                // 是否为精准测速，若使用间接URL来测速，则填ROUGH
 
 /**
  * @update 2025-12-31
diff --git a/src/recipe/ware/Docker-Hub.c b/src/recipe/ware/Docker-Hub.c
index 855f8c7..3abb386 100644
--- a/src/recipe/ware/Docker-Hub.c
+++ b/src/recipe/ware/Docker-Hub.c
@@ -13,20 +13,20 @@ static MirrorSite_t DaoCloud =
 {
   "daocloud", "DaoCloud","上海道客网络科技有限公司", "https://www.daocloud.io/",
   // 没有找到 DaoCloud 合适的下载链接，先随便给一个，以规避 chsrc 自动测速时所有 dockerhub 镜像站都没有测速链接带来的 bug
-  {NotSkip, NA, NA, "https://qiniu-download-public.daocloud.io/DaoCloud_Enterprise/dce5/offline-community-v0.18.0-amd64.tar"}
+  {NotSkip, NA, NA, "https://qiniu-download-public.daocloud.io/DaoCloud_Enterprise/dce5/offline-community-v0.18.0-amd64.tar", ACCURATE}
 },
 
 Fit2Cloud =
 {
   "fit2cloud", "FIT2CLOUD", "杭州飞致云信息科技有限公司", "https://www.fit2cloud.com/",
-  {SKIP, ToFill, ToFill, NULL}
+  {SKIP, ToFill, ToFill, NULL, ROUGH}
 },
 
 Huecker =
 {
   "huecker",  "(Russia) Huecker", "俄罗斯 Huecker.io",   "https://huecker.io/",
   // 同 DaoCloud，没有合适的下载链接，先随便给一个，以避免 bug
-  {NotSkip, NA, NA, "https://huecker.io/en/use.html"}
+  {NotSkip, NA, NA, "https://huecker.io/en/use.html", ROUGH}
 };
 
 /**
diff --git a/src/recipe/ware/Emacs.c b/src/recipe/ware/Emacs.c
index 883b6f5..ae2e3cc 100644
--- a/src/recipe/ware/Emacs.c
+++ b/src/recipe/ware/Emacs.c
@@ -10,7 +10,7 @@
 static MirrorSite_t EmacsChina =
 {
   "emacschina", "EmacsChina", "Emacs China 社区", "https://elpamirror.emacs-china.org/",
-  {SKIP, ToFill, ToFill, NULL}
+  {SKIP, ToFill, ToFill, NULL, ROUGH}
 };
 
 /**