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...
Some of the labour leaders were also questioned by the reactionary police.一些工会领导人也受到反动警察的查问.Liang Qichao used such dualist concepts as reactionary and herald, restoration and emancipation, etc.梁启超在其学术史著中,使用了反动与先驱 、 复古与解放...