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...
他被警察盯梢.He was shadowed by the police.他被侦探盯梢.He is shadowed by a spy.老伙计，只不过又是一份盯梢的活。对你这样的人来说还不是小菜一碟。Just another surveillance job, old chap. Piece of cake to somebody like you....
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。...
Cash income is calculated by subtracting total trading income from total receipts.现金收入是从总收入中减去总贸易收入来计算的.Making Boolean calculating to a component, at first execute union, then subtracting.对组合体执行布尔运算时, 先加后减.Subtracting cu...
Middle - class lifestyles have flourished even though median wages have barely budged.尽管收入中值几乎原地不动, 中产阶级 的生活方式还是日益兴旺.Under the wise rule of the headmaster, the school flourished.在校长明智的管理下, 这所中学得以发展起来.Archimedes flourishe...