AngularJs 三目运算符

<div ng-if="scope==‘all‘" class="outline-border">
    结果：巡检路线数量： 
    <strong>{{statistics.routesCount?statistics.routesCount:"字符串需使用引号"}}</strong>
    ，覆盖设备设施总数：
    <strong>{{statistics.routeEqTotal?statistics.routeEqTotal:0}}</strong>
    ，巡检整体覆盖率：
    <strong>{{statistics.eqCoverRate?statistics.eqCoverRate:0}}%</strong>
    ，特种设备数量：
    <strong>{{statistics.routeSpecialEqTotal?statistics.routeSpecialEqTotal:0}}</strong>
    ，特种设备巡检覆盖率：
    <strong>{{statistics.eqSpecialCoverRate?statistics.eqSpecialCoverRate:0}}%</strong>.
</div>