我希望你有一个在一个钻锥的周围不介意展现他的女朋友。
I hope you have a girl friend that wouldn't mind showing him around a bit.
使用3d印制机作为生产工具在工业上被称作“加法”制造(与传统的对金属进行裁剪、锥钻、击打的“减法”制造相反)。
Using 3d printers as production tools has become known in industry as "additive" manufacturing (as opposed to the old, "subtractive" business of cutting, drilling and bashing metal).
浮鞋的内部(包括锥型段部分)通常由水泥或热塑性材料组成,如果在套管鞋处井眼还需要继续加深的话这种材料必须被钻掉。
The inside (including the taper) is usually made of cement or thermoplastic, since this material must be drilled out if the well is to be deepened beyond the casing point.
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