磨削内圆时，把小砂轮安装成能在工件的内孔中来回运动，工件夹在旋转的夹具内。
Fixtures are installed on the small turntable of each table, and the small turntable can rotate on the basis of the revolution of the central rotary table.
安装砂轮之前，应该仔细检查砂轮，以确保没有裂纹或缺陷。
Before an abrasive wheel is mounted, it should be inspected closely to be sure that it is free from cracks or defects.
该电路制做简单，可靠性高，易于在机床上安装，显示直观，为磨床砂轮的平衡调整提供了可信赖的参考依据。
It has a higher reliability. Its installation on the grinder. is easy too. Indication is Visualized. It provides reliablereference basis for emery wheel balance adjustment of grinder.
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