| 释义 |
钎子qiān·zi在岩石上凿孔的工具,用六角、八角或圆形的钢棍制成,有的头上有刃,用压缩空气旋转的钎子当中是空的。{bit; rock drill; implement fashioned out of hexagonal, octagonal or round steel rod, with cutting edges and a pointed end for boring holes in rock by repeated blows, and hollowed for rotation-abrasion operation by compressed air;}也叫also炮钎{pàoqiān}。 |