The device is provided with an electric appliance which can regulate the time of pushing barmovement and thereby controlling the processing time of each machined surface.
该设备安装有可随意调节 推杆运动的时间间隔进而决定每个加工面的加工时间的电器；
2
The movement of the bar is usually part of some multithreaded task, which helps to avoid blocking progress from the rest of the application, like regular screen updates.