磨盖板机中的盖板传动装置由一个曲柄滑块机构和两个转动导杆机构等组合而成。
The device for driving flat in the flat grinding machine is composed essentially of a slider-crank mechanism and two rotating guide mechanisms.
要操作此机器，需要几个人转动与真空泵相连的曲柄装置。
To power the machine, several people would turn a crank arm connected to the vacuum pump.
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