介紹了利用BTC生產 過程中產生的副產品氯化氫氣體合成鹽酸乙脒的工藝研究.This paper introduces the production technology of acetamidine hydrochloride and hydrogen chloride produced in BTC synthesis.采用重量分析法測定鹽酸乙脒中難揮發雜質的含量.The content of in volatile impuriti...
Don't dampen the enthusiasm of the masses.不要損傷大家的積極性.I hate to dampen your spirits but aren't you overlooking a couple of minor points.我不想掃你的興，但你是否忽視了幾個小的問題呢？Although unemployment rose last month, this is unlik...