The frictional resistance factor increases with the increase of the flow velocity, decreases with the increase of temperature and its variation law with the pressure is complicated.
摩擦阻力系数随着流速增大而增大,随着温度的升高而减小,而其随着压力的变化特别复杂。
2
This paper mainly deals with the abrasion resistancevariationof milling cutters of M2 steel by using super low temperature treatment.