指示器被固定好以便于维修箱在工作时容易地观察指示器的盘面。
The indicator is fixed such that the face of the indicator can be viewed easily when the "Breakout Box" is in operation.
预防性维修计划是一份工作进度计划内的一项不可或缺的元素，以便于实现这项目标。
A preventative maintenance program is an essential component of a schedule of work to achieve this objective.
在自动控制阀的上游和下游应该安装蝶阀或类似的阀门，以便于进行维护维修。
Butterfly or similar type valves should be installed in the line upstream and downstream of the automatic control valve to allow for maintenance service.
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