fix--改描述

src/views/datav/MailVisits.vue

@@ -884,9 +884,9 @@ const getMailMapIconDataFun = async () => {
   const range30Percent = avg * 0.3   // 不用取整，小数也可以
   option.value.series[0].data = mappedData;
   option.value.visualMap.pieces = [
-    {gte: 0, lte: avg - range30Percent, label: "低于平均问题30%", color: "#4987F6"},
+    {gte: 0, lte: avg - range30Percent, label: "低于平均信件数30%", color: "#4987F6"},
-    {gte: avg - range30Percent, lte: avg + range30Percent + 0.1, label: `平均问题上下浮动30%内`, color: "#F6A149"},
+    {gte: avg - range30Percent, lte: avg + range30Percent + 0.1, label: `平均信件数上下浮动30%内`, color: "#F6A149"},
-    {gte: avg + range30Percent, label: "高于平均问题30%", color: "#D34343"},
+    {gte: avg + range30Percent, label: "高于平均信件数30%", color: "#D34343"},
   ];
 }
 const getMailTrendDataFun = async (year = selectedYear.value) => {