A centrifugally activated device for controlling the speed of movement of an elevator cab includes the capability of controlling upward and downward movement.
一种用于控制电梯车厢运动速度的离心致动装置，包括控制向上和向下运动的能力。
A centrifugally activated device for controlling the speed of movement of an elevator cab includes the capability of controlling upward and downward movement.
一种用于控制电梯车厢运动速度的离心致动装置，包括控制向上和向下运动的能力。
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