A theoretical model is proposed for calculating the surface prole provoked by back cutting surface marks during face milling.

理论模型，提出了计算表面简介挑起回到切割表面标志着在脸上铣削。

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Simple, make a process hole in the opposite direction of this inner surface, process with milling cutter. Fetch back the process hole after procession was finished.

简单，在该内表面的对面开加工孔，然后用铣刀加工。加工完之后，把加工孔补上。

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Considering the problem existing in the back-off and milling operations of current small-scale workover, a hydraulic rotary table was developed.

针对目前小修井作业在倒扣、磨铣等作业中存在的问题，研制了适合于小修井作业的液压转盘。

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When Lott concluded, Daschle steered the Senate back to the issue at hand -- the education bill -- and with that, senators began milling about, business as usual.

CNN: Smiles, handshakes on the Senate floor