当再次按钮点动滑齿柱转齿环和滑齿套因弹簧上升复位。
When the button is pointed again the slide tooth column, the rotating tooth ring and the slide tooth sleeve return because of spring.
当再次按钮点动滑齿柱转齿环和滑齿套因弹簧上升复位。
When the button is pointed again the slide tooth column, the rotating tooth ring and the slide tooth sleeve return because of spring.
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