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...
British justice of the time was grim and unflinching.英国当时的法律是严酷的.I was again using the cold, unflinching eye of the camera to probe a sick society.我再次通过照相机冷漠、坚定的镜头去探究这个病态的社会。...the armed forces, all of whom had pledged t...