基本解釋[經(jīng)濟學(xué)]硬質(zhì)郃金槍鑽詞組短語短語carbide e gun drill 硬質(zhì)郃金槍鑽carbide gun drill更多詞組專業(yè)釋義經(jīng)濟學(xué)硬質(zhì)郃金槍鑽