常見例句雙語例句Sulfate scale of boiler is difficult to remove by chemical cleaning.硫酸鹽垢是化學(xué)清洗中較難清洗的垢物。The boiler after chemical cleaning, generally also should have cold washing and hot washing.清洗 后，一般還應(yīng)進(jìn)行冷態(tài)沖洗和熱態(tài)沖洗。This paper expounds tersely author's achievement and experience of chemical cleaning for boiler in last 48 years.本文扼要闡述了作者48年來從事鍋爐化學(xué)清洗研究與實(shí)踐的業(yè)績與心得。 返回 boiler chemical cleaning