基本解釋[經(jīng)濟(jì)學(xué)]八角鉆桿詞組短語(yǔ)短語(yǔ)octagonal l shaft 八角鉆桿octagonal shaft更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)八角鉆桿