style: 调整单值图单位位置

src/assets/css/components/views/charts/chartSingleValue.scss

@@ -1,4 +1,8 @@
 .cn-chart__single-value {
+  .single-value__unit {
+    padding-left: 6px;
+  }
+
   &.cn-chart__single-value--detail-overview.cn-chart__single-value--icon-left {
     width: unset;
     flex: 0 0 240px;
@@ -561,7 +565,6 @@
       }
 
       .single-value__unit {
-        font-weight: normal;
         padding-right: 10px;
         color: #333333;
         font-size: 14px;
@@ -675,7 +678,6 @@
       }
 
       .single-value__unit {
-        font-weight: normal;
         color: #333333;
         font-size: 22px;
         font-weight: bold;

src/utils/unit-convert.js

@@ -94,6 +94,8 @@ export default function unitConvert (value, unitType, sourceUnit, targetUnit, do
         const r = (value * 100).toFixed(dot)
         if (_.isNaN(r)) {
           return ['-', '']
+        } else if (r == 0) {
+          return [0, '%']
         } else {
           return [r, '%']
         }