The instant polar movement has backward movement (from east to west).
瞬时极移存在反向运动(由东向西)。
Recoil mechanism is the crucial part which controls the backward movement of a gun.
驻退机是反后坐装置中控制火炮后坐规律的关键部件。
Recoil mechanism is the crucial part which controls the backward movement of a gun.
驻退机是反后坐装置中控制火炮后坐规律的关键部件。
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