短語(yǔ)詞組短語(yǔ)Design of Washing Column 洗滌塔的設(shè)計(jì)Nitrogen washing column 氮洗塔washing -drying column [油脂]洗滌乾燥罐;乾燥罐foam water -washing column 泡沫水洗塔 返回 wash column