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1·Tool forces govern selection of the workholding device.

刀具的压力决定了工件夹具的选择。

2·The surface of the table is cut with t slots so that workholding devices such as the vise can be clamped to them.

工作台的表面切有T形槽以便工件夹具，如台钳，能固定在T形槽上。