routine operating pressure
... round-point shovel 圆头铁锹 routine operating pressure 正常操作压力 royalty 矿区使用费；矿藏开采权 ...
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需排空气待压力表指示正常后继续下一步操作。
Air pressure gauge to be waiting to be instructed to continue normal operation the next step.
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在正常操作条件下，压力阀是不用维修的，特殊情况需要维修时，应由专业人员来进行。
It is no need to maintenance under normal circumstance. It should be serviced by professional when repaired.
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