Organic silicate is prepared by Quaternizing, Hydrosilylation addition and Balanced or Polycondensation reaction.有机硅季铵盐是通过季铵化, 硅氢化加成和平衡或缩聚等反应制得.A silicone - polyether copolymer was synthesized by the hydrosilylation of s...
The events in Los Angeles have sparked a new national self-examination.发生在洛杉矶的事件再次引发了全国范围的反思。He had a third examination and was declared unfit for duty.他接受了第三次检查，被告知不宜上班。If the examination shows your company enjoys basic...
“So what?” Tom said sullenly.“那又怎么样呢?”汤姆绷着脸说。He stared sullenly into space, pretending not to hear the jeers.他面色阴郁地凝视前方，假装没听见那些冷嘲热讽。Such promises, said Apacides sullenly , are the tricks by which man is ever gulled.阿帕奥得斯...