poweroff
- 断电;停车
![poweroff](../cache/242961.jpg)
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VC makes the high-performance AC drives achieved and developed . The technique of electrical pole changing makes the motor have the ability of changing pole without poweroff .
矢量控制技术使得高性能交流调速系统得以实现,并使其获得了巨大的发展空间,电子变极技术可以使电机在不停电的情况下进行变极,从而具有更宽广的调速运行范围。
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When a system power-off is necessary , the kernel invokes the / sbin / poweroff command in user space to accomplish it .
当需要系统关闭电源时,内核调用用户空间的/sbin/poweroff命令来完成。