n. jack
misc. retraction jack
对以铰链连接为主的某型飞机前起落架收放机构的磨损可靠性进行了全面的计算。
The wear reliability on extending-retracting mechanism of nose landing gear of a military aircraft is analysesed and calculated.
无人机起落架设计所涉及的相关构件、机构通常包括：缓冲支柱、机轮、轮胎、刹车防滑系统、操纵减摆机构、收放机构等。
The relevant organizations involved usually include absorbing system, undercarriage tyre, brake slip resistance system, landing gear shimmy dampers, retracting-lowering system, etc.
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