扩孔

扩孔 [kuò kǒng]

1. ■ reaming; {土} under-reaming; bearizing; ring rolling; hole enlarge; counterbore

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常用词组

1. ■ 扩孔刀具 broad;

2. ■ 扩孔底 squibbing;

3. ■ 扩孔机 staving press; ring rolling machine;

4. ■ 扩孔钻头 broaching bit; counterbore cutter head; hole dilating drill; redrill bit; underreaming bit