Objective To study the catalytic activity of potassium bisulfate in synthesizing hexyl hexanoate.目的研究硫酸氢钾在合成己酸己酯工艺中的催化性能.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...
He was to remain in jail in the interim.他在此期间将会继续被关押。Little seems to have happened in the interim.在这期间似乎没发生什么事情.But, in the interim, we obviously have a duty to maintain law and order.但是，在过渡期间，我们显然有责任维护治安。...
The examinee had scarcely finished the test when the bell rang.这位考生刚做完考卷,铃声就响了.To examinee, the place is more valuable than fractional absolute value.对于考生而言, 名次比分数绝对值更有价值.Examinee: I ask you take mug - up and beer to me ...