Comparing with polyurethane, the prospects of the applications of isobutene telechelic oligomer are presented.并与聚氨酯材料相比较;说明了聚异丁遥爪预聚物的主要应用前景.Tert - octylamine was prepared with di - isobutene and hydrocyanic acid as mine ...
他们不能容忍反覆无常的拥护者.They have no use for fickle supporters.新话, 双重思想, 变易无常的过去.Newspeak, doublethink, the mutability of the past.人生是一场稍稍不那么无常的梦而已.Life is a dream a little less inconstant....
She was the only woman in Shell's legal department.她是壳牌公司法律事务部唯一的女性。He passed the letters to the Department of Trade and Industry.他把信交给了贸工部。My department had a healthy interest in keeping expenses down.我部门对维持低水平开支有浓...
一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells.目的 研究2乙基3 羟基 6苯硫基4 ( 1H ) 吡啶酮 ( HPP ) 的抗氧化作用.AIM To study...