通过摇动复式刀架操纵柄手动提供进给。
Feed is manually provided by cranking the handle of the compound rest.
这种方法用于车削很长的工件，其长度大于复式刀架的整个行程。
This method is used for turning very long workpieces, when the length is larger than the whole stroke of the compound rest.
轴向进给通过大拖板或复式刀架手动或自动提供，然而切削深度则由横向滑板控制。
The axial feed is provided by the carriage or the compound rest, either manually or automatically, whereas the depth of cut is controlled by the cross slide.
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