Situations of preparing isocyanate trimers at home and abroad are mainly introduced.主要介绍国内外异氰酸酯三聚体的制备状况.Polyether - type isocyanate prepolymers are prepared with polyether polyols and tolylene diisocyanate.采用聚醚多元醇和甲苯二异氰酸...
Our instinctive reaction when someone causes us pain is to strike back.当被别人弄疼时我们本能的反应是反击。It's an absolutely instinctive reaction—if a child falls you pick it up...这完全是本能的反应——如果一个孩子摔倒了你会把他扶起来。an instinctive reaction本...
"Not this time, Faye," he replied with finality.“这次不行，费伊，”他斩钉截铁地说。He spoke with curt finality.他说得斩钉截铁.This landmark case dispels the absolute finality of this dreaded disease.这个划时代的病例终于改观了这可怕疾病的绝对结局....
They brought home heaps of travel brochures.他们将成堆的旅行手册带回家.The machine flung up great heaps of earth.这台机器抛起了大片的土.It was surrounded with heaps of combustible materials.它周围是一堆易燃物质....
a Scottish rugby internationalist参加国际比赛的苏格兰橄榄球队队员Maintaining world peace is our unshirkable internationalist duty.维护世界和平是我们义不容辞的国际主义义务.Doctor Bethune's internationalist spirit is altogether admirable.白求恩大夫的国际主义精神十分可...