Trephine
[tri'fain]
解释:
(n.) An instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator called the center pin.
(v. t.) To perforate with a trephine; to trepan.
格拉迪斯校对
同义词及近义词：
v. a. Trepan.
手打:奥齐
解释:
n. the modern trepan having a little sharp borer called the centre-pin.—v.t. to perforate with the trephine.
校对:露辛达