[attr.colspan]
<tr style="font-size: 12px;"><th rowspan="1" style="width: 80px;background-color: white;">名称</th><ng-container *ngFor="let item of lotOfWork.columnNameList; let i = index"><th [attr.colspan] = 'item.dataSize' noWrap="noWrap">{{item.columnName}}</th></ng-container></tr>
