基本解釋n. 螺紋底孔鉆;螺孔鉆詞組短語(yǔ)短語(yǔ)tap p borer 螺孔鉆tap borer更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)螺孔鉆機(jī)械工程螺孔鉆螺紋底孔鉆