locating and drilling center holes
Speed, Feed, and Depth of Cut 转速、进给量和切削深度 Locating and Drilling Center Holes 定中心孔和钻中心孔 Facing the Ends With the Workpiece Held Between Centers 把工作夹持在两顶尖之间车端面 ..
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locating and drilling center holes
定位和钻孔中心孔
以上为机器翻译结果，长、整句建议使用 人工翻译 。