fix：多中标单位表格样式调整

Signed-off-by: tsz <2417024719@qq.com>

src/web/staticres/dataExport/css/previewData.css

@@ -309,8 +309,11 @@ th {
 }
 
 .d_body .el-table .set-table-line{
+  display: flex;
+  justify-content: center;
+  align-items: center;
   width: 100%;
-  height: 24px;
+  min-height: 24px;
   border-bottom: 1px solid #e6e6e6;
 }
 .d_body .el-table .set-table-line:last-child{