Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied.环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素....
The functions of their diffuseness, orientation, agglomeration, catalyzer and controls are indispensable factors of science development.其传播功能 、 导向功能 、 凝聚功能 、 催化功能和控制功能等等是科学事业发展中必不可少的重要因素....
Freezing weather in spring hampered the hens' ability to lay.春天严寒的天气降低了母鸡的产蛋能力。Police have been hampered by Mr Urquhart's use of bogus names.厄克特先生使用了假名，警方的调查因此受阻。The search was hampered by appalling weather con...
Tom booted the football over the goalpost.汤姆把足球踢过了球门柱.My mother booted my brother out of the house.我母亲把我哥哥从家里赶了出去.The manager booted his secretary out for her wantonness.经理开除了他的秘书,因为她行为放荡。He booted the ball 40 yards back...