多项安全互锁功能，以保护操作者免受活动部件的伤害；
With multiple security interlocks functions, it is possible to protect the operator from being injured by moving parts.
气瓶装入互锁安全装置；开关未关旋钮处于开的位置气瓶将无法安装。
The cylinder loads mutual lock safety device; the cylinder unable to install, if the switch has not turned off, and on the "on" position.
同样，安全开关也可以是机械互锁装置，当汽车挂挡后不允许点火开关转到启动位置。
It can also be a mechanical interlock device that will not let the ignition switch turn to start if the car is in the gear.
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