Their antiwear and extreme pressure properties in rapeseed oil and water were tested on the four-ball tester. 通过四球试验机考察了它们在菜籽油和水中的抗磨性能与极压性能。
It has exceptional lubricity and extreme pressure properties that give outstanding surface finishes as well as longer tool life. 本产品不含有活性硫极压添加剂，但仍具备极佳的润滑和极压性能。
