The micro or nano powder,or micro and nano powders were mixed into base oil,machinery oil 68,and confected into five kinds of running-in oils.

• 将微米和纳米固体粉末单独或混合加入到68%23机械油中,配制了5种微米、纳米或微纳米混合磨合油,并试验研究了5种磨合油分别应用于钢质粗糙软齿轮副间的磨合磨损行为和作用机制。