The mechanism, development, testing and field test of EP DRA are introduced.介绍了EP系列减阻剂的作用机理 、 研制方法 、 中试生产和现场实验的概况.The EP antiwear property is different that it contains different additives.不同的添加剂配伍,聚脲润滑脂的极压抗磨性也不一样.INTECH...
Thinking this was because of the old woman's tactlessness, her husband just smiled.男子以为这是笑大娘不懂事,所以也在一旁干笑着.His tactlessness showed that he had completely misread the situation.他不能随机应变,这表明他对情势完全误解了.Mrs Hardie hurried ...
这不是为赈济饥荒的又一次募捐。This is not another appeal for famine relief.他们为筹款建新教室而办了个募捐会。They held a harambee meeting to raise funds for a new classroom.他的同事为他的告别晚会募捐.His workmates made a collection for his leaving party....
Many people are now speculating whether we will demolish the Memorial Hall.现在世界上都在猜测我们要毁掉纪念堂.To oppose the subjectivist, one - sided approach to problems, we must demolish dogmatist subjectiveness and one - sidedness .我们...
The transformation and production rearrangement of the crude benzol distillation system are described.介绍了粗苯蒸馏系统的改造和生产调整情况.METHOD: Using Chapman rearrangement to prepare 2, 6? dichloro? diphenylamine.方法: 应用 Chapman 重排制备2,...