angular js多选下拉列表

Question

<tr ng-repeat="x in Validations|orderBy:sortType:sortReverse | filter:org"  >
    <td>
        <input type="checkbox" ng-model="x.id" ng-checked="toggle">
    </td>
    <td"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --user-data-dir="C:/Chrome dev session2" --disable-web-security>{{ x.name }}</td>
    <td>{{ x.lastUpdated }}</td>
    <td><dropdown-multiselect model="selectedUserIds" options="setting.instances"></dropdown-multiselect> 
        <li data-ng-repeat="item in selectedUserIds">{{ item }}Instance</li>
    </td>
</tr>   

当我dynmiclly打印tble并在选择下拉列表时打印它时，它也会显示其他行中的值很好。为什么？