The releasing mechanism is a timer mechanism to release the payload after a preset time, or alternatively, is a wireless controlled mechanism.
该释放机构是在预先设置时间后释放载荷的计时器机构，或者可选地，是无线受控机构。
The releasing mechanism is a timer mechanism to release the payload after a preset time, or alternatively, is a wireless controlled mechanism.
该释放机构是在预先设置时间后释放载荷的计时器机构，或者可选地，是无线受控机构。
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