常見例句雙語例句This paper illustrates the principle of the inner cone grinding twist drill and the process of grinding experiments on the tool grinder.闡述了內(nèi)錐麪法刃磨麻花鑽的原理以及在工具磨牀上進(jìn)行磨削工藝試騐的方法。 返回 twist drill grinder