通过使用个人保护装置以及噪音控制工程，减少接触噪音时间。
reducing exposure (both occupational and recreational) to loud noises by using personal protective devices and by engineering noise control.
接触电动机的保护装置，控制系统，联锁系统是否符合要求。
Inspect the electric motor protection, control and interlock if they are right.
该保护电路与传统的保护电路相比，不仅无需考虑交流接触器的热稳定性，还省去了热继电器、交流接触器等保护装置的耗能。
Comparing this protective circuit with conventional protective circuit, it has advantages of independent from thermal stability of ac contactor, save energy consumption of the...
该保护电路与传统的保护电路相比，不仅无需考虑交流接触器的热稳定性，还省去了热继电器、交流接触器等保护装置的耗能。
Comparing this protective circuit with conventional protective circuit, it has advantages of independent from thermal stability of ac contactor, save energy consumption of the...
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