The progresses in the synthesis study of isoamyl isovalerate at home and abroad were reviewed.综述了国内外对异戊酸异戊酯的合成研究的进展情况.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正...
Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl bu...
...nurses seeking greener pastures overseas.到国外寻求更好前程的护士们Doctors examined the recruits but nurses did the inocuLating.医生们给新兵检查了身体,护士们给他们打了预防针.Nurses are continuing to work to rule.护士们还在消极怠工。Nurses are undervalued, and th...
我们知道不断增加的引力会加速细胞的分裂。Increasing gravity is known to speed up the multiplication of cells.增加的投资将有助于经济的稳定。The increased investment will help stabilise the economy.额外的责任与小幅增加的薪金之间的不相称the disproportion between the extra respo...