常見(jiàn)例句雙語(yǔ)例句Machine barrel and screw arbor of extrusion machine both adopt quality alloy steel, with nitriding and fine machining.擠出機(jī)的機(jī)筒、螺桿均采用優(yōu)質(zhì)合金鋼，經(jīng)氮化和精密加工。 返回 barrel arbor