poweroff

for our example, clicking on poweroff goes to a new page where we can enter data for the specific operation.

在我们的示例中，请单击powerOff转到一个新页，其中可以为特定操作输入数据。

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。

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。