As regarded its origin there were various explanations, all of which must necessarily have been conjectural.至于其来源,则有着种种解释, 当然都是些臆测.Theories about the extinction of dinosaurs are still highly conjectural.关于恐龙灭绝的理论仍然是带有很强的...
摘要建立了异辛酸合成过程中异辛醇、异辛酸和酯的气相色谱分析方法.A gas chromatography method for the quantitative analysis of isooctyl acid was introduced in this paper.异辛醇磷酸酯盐与其它助剂复配后,可明显提高其耐碱性.The ethylhexyl p hosphate salt markedly raised the alkali ...
Coleman has never wavered in his claim that he is innocent.科尔曼坚称他是无辜的。This time his voice wavered badly.这次他声音颤得厉害。His voice wavered with emotion.他激动得嗓音发抖。...
Huston had assembled a remarkably cohesive and sympathetic cast.休斯顿聚集起了一个非常默契和讨喜的演员团队。Only the thermosetting resins provide a strong cohesive forces; this is due to molecular cross linkages.只有热固性树脂具有巨大的凝聚力, 这是由于分子交错链所造成的...
I'm no longer the apparently eternally cheerful chappy he remembers.我已经不是他记忆中那个似乎永远快乐无忧的人了。His cheeky chappy image is reinforced by the spiky hair and the wide grin.他那直立的头发和咧着嘴的笑容使他更像个厚脸皮的家伙。...