Mechanical maintenance personnel had in maintenance to ensure machine should be in stop working state. And hang them, lest machine suddenly run for the accident happened.
机械维修人员在维修保养时应确保机器处于停止工作状态。并挂上警示牌，以免机器突然运行而发生人为事故。
The machine stop automatically when upper thread run out or broken.
如果上线发生断线，那么上线的断线感应设备会自动使机器停止。
The machine did not stop because the fuel had run out.
这台机器不是因为燃料用完而停止运转。
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