常見(jiàn)例句雙語(yǔ)例句Mechanical foam is made when its three parts: water, air and foam concentrate(chemical compound)are brought together in proportionate amounts and thoroughly and turbulently mixed.當(dāng)水、空氣和泡沫劑（化合物）按比例完全混合，就可形成機(jī)械泡沫。www.infopetro.com.cn 返回 air foam concentrate