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...
a shrine to the patron deity of the city供奉这座城市的守护神的圣殿The patron of the bar was ejected for creating a disturbance.酒吧客人因制造骚乱而被驱离.Catherine the Great was a patron of the arts and sciences.叶卡捷琳娜大帝赞助过各种艺术创作和科学研究。Chiswick chu...
I'll have to scrape together some money for a sight - seeing trip.我得积蓄点钱去旅游.I spent a couple of days sight - seeing in Guilin.我在桂林盘桓了几天,观光了名胜.We hired a guide and began the business of sight - seeing immediately.我们雇...