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src/views/deviceNumManager/index.vue

@@ -75,7 +75,7 @@
               </div>
             </template>
           </el-table-column>
-          <el-table-column align="center" prop="studentId" label="设备号">
+          <el-table-column align="center" prop="studentId" label="设备号" width="280px">
             <template slot-scope="scope">
               <div>
                 <copy-text>{{ scope.row.deviceNum }}</copy-text>