Ma damper actuators a Spring Return amapangidwa kuti azigwiritsidwa ntchito pafupipafupi, ma valve ozungulira ndi zida zina zomwe zimafunikira ntchito yolephera. Pa ntchito yachibadwa, actuator inayendetsa chipangizocho. Kuzimitsa magetsi, actuator imabwerera pomwe idayamba.
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