Weatherproof or explosion proof electric actuator.
电动执行机构的气候保护或防爆保护。
The main advantage of electric actuators is the driving source to facilitate, but the high price, reliability, water-proof explosion-proof than pneumatic actuator, it should be preferred pneumatic.
电动执行机构主要优点是驱动源方便，但价格高，可靠性、防水防爆不如气动执行机构，所以应优先选用气动式。
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