扩孔

kuòkǒng

reaming

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kuo4 kong3

to widen a tube, to ream (i.e. widen a hole)

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扩孔

kuò kǒng

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

扩孔刀具 broad;

扩孔底 squibbing;

扩孔机 staving press; ring rolling machine;

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

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擴孔|扩孔 [kuò kǒng] ► to widen a tube ► to ream (i.e. widen a hole)