介绍了利用BTC生产 过程中产生的副产品氯化氢气体合成盐酸乙脒的工艺研究.This paper introduces the production technology of acetamidine hydrochloride and hydrogen chloride produced in BTC synthesis.采用重量分析法测定盐酸乙脒中难挥发杂质的含量.The content of in volatile impuriti...
Eight drawings by French artist Jean Cocteau will be auctioned next week.下周法国画家让·科克托的8幅作品将被拍卖。Her dresses will be auctioned off for charity.她的衣物将被拍卖以资助慈善事业。It was sad to see all grandmother's lovely things being auc...
I paused in the hall to take three deep breaths to restore my equilibrium.我在大厅里停了一下，深吸了三口气以恢复平静。Cetaceans reduce the number of breaths they take during rest periods.鲸类动物在休息时减少它们的呼吸次数.I paused in the hall to take three de...