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...
...his six-day bus tour around the industrial heartland of America...他在美国工业中心区域的大巴6日游We then headed west towards the heartland of Poland.我们随后朝西前往波兰中部。The USA’s Middle West is the heartland of the country.中西部是美国的中心区域。Cun ...
He asked to see the amended version.他要求看修订本。He amended his speech by making some additions and deletions.他对讲稿作了些增删修改.The thief has amended.这小偷改过自新了....