gathering tank英 [ˈɡæðərɪŋ tæŋk]美 [ˈɡæðərɪŋ tæŋk]网络 集油罐化学双语例句Study of hot alkaline solution cleaning-floatation separation method of oily sludge at gathering tank bottom集输罐底油泥的热碱水清洗-气浮分离技术研究