基本解釋[經(jīng)濟(jì)學(xué)]人字正齒輪英漢例句雙語(yǔ)例句English Name:Gear drawing standards - Part 1: For Spur, helical, double helical and rack.簡(jiǎn)體中文標(biāo)題：齒輪制圖標(biāo)準(zhǔn)。第1部分正齒。螺旋齒。雙螺旋齒和齒條。double helical spur gear更多例句詞組短語(yǔ)短語(yǔ)double e helical spur gear 人字正齒輪double helical spur gear更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)人字正齒輪