应该安装蒸汽安全阀，为设备提供紧急保护。
Steam safety valve should be installed to provide emergency protection of equipment.
安装在飞机上的应急设备为旅客和机组乘员提供安全保护。
The emergency equipment is installed in the aircraft for the safety of the passengers and the crew.
当保护一幢建筑时，允许给特殊的设备安装一个分开的接地电极吗？
When protecting a building it is permitted to install a separate grounding electrode for special equipment?
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