如果接地开关处于合闸状态，手车向工作位置的操作必须被机械联锁锁定。
With the earthing switch closed, insertion of the withdrawable part towards the service position must be blocked after only two clockwise turns of the crank.
当要求进入电梯底坑的时候，必须首先打开控制柜中主开关IG，然后把安全杆转到工作位置；
When entering the elevator pit is required, firstly turn on the main switch IG in the control cabinet, and then switch the safety rod to the working position;
曲轴上凸轮凸角的位置使气门在恰当的时侯开关，以便与气缸的工作顺序相一致。
The CAM lobes are so positioned on the camshaft as to cause the valves to open and close in the cylinders at the proper time with respect to the actions taking place, in the cylinders.
机器运转时，工作人员不能站立在惯性力作用线的范围内，电器开关的安装也要避免这个位置。
When the machine working, workers should stand around inertia power process line, the installation of wiring should also avoid this place.
首先，根据开关磁阻电机的结构和工作原理，建立了SR电动机的数学模型，分析并确定了SR电动机的位置信号检测方法。
Firstly, according to the structure and working principle of SRM, establish its mathematical model, analyze and confirm the position signal detective method of SRM.
首先，根据开关磁阻电机的结构和工作原理，建立了SR电动机的数学模型，分析并确定了SR电动机的位置信号检测方法。
Firstly, according to the structure and working principle of SRM, establish its mathematical model, analyze and confirm the position signal detective method of SRM.
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