The effect of acidity on synthesis of phenylbiguanide additive reaction of aniline with dicyandiamide was studied.研究了酸度对苯胺与双氰胺加成反应生成苯基双胍的影响.Major Composite of thc SeaIant is bisphenol A epoxy resin, dicyandiamide, ureido...
I thought the magical reindeer made The sleighs fly.不是魔法驯鹿让雪橇扶摇直上的吗?Here, three Santas forego their sleighs in favor of an underground commute.在这里, 三个圣诞老人放弃他们的雪橇有利于地下通勤.Wang Ping: Is It'sleighs?王平: 是雪橇吧?...
她身体不舒服，简直要崩溃了。She is not herself. She came near to a breakdown.目睹困苦、潦倒的景象，他们感到心里极不舒服。They were sickened by the scenes of misery and degradation they found.没什么大不了的。只是胃有点不舒服，没别的。It wasn't anything serious. A mild stom...