角色页面中增加了新增与删除角色时调用后端的过程；对显示效果进行了微调

frontend/src/views/machine/device/index.vue

@@ -8,10 +8,10 @@
         <!-- :requestApi="getRoleList" -->
         <!-- 表格 header 按钮 -->
         <template #tableHeader='scope'>
-          <el-button type='primary' :icon='CirclePlus' >新增设备</el-button>
-          <el-button type='primary' :icon='Download' plain >导出设备数据</el-button>
+          <el-button type='primary' :icon='CirclePlus' >新增</el-button>
+          <el-button type='primary' :icon='Download' plain >导出数据</el-button>
           <el-button type='danger' :icon='Delete' plain :disabled='!scope.isSelected'>
-            批量删除设备
+            批量删除
           </el-button>
         </template>
         <!-- 表格操作 -->