基本解釋[經(jīng)濟學(xué)]錐柄麻花鉆頭詞組短語短語Taper -shank lengthened fluted twist drill 錐柄加長麻花鉆taper-shank twist drill更多詞組專業(yè)釋義經(jīng)濟學(xué)錐柄麻花鉆頭