位移度是“形位公差”中一项新的重要指标。尽管近几年来这项指标有所推广和使用,但至今在一部分工程机械制造厂中仍未采用。其原因之一是因为对它没有充分的认识和学会正确的使用。本文结合推土机、装载机的零件,简要叙述位移度及其应用,以求起到对实际有所帮助的作用。 Displacement is a new important indicator of “form tolerance”. Although this indicator has been promoted and used in recent years, it has not yet been adopted by some construction machinery factories. One of the reasons is because it does not fully understand and learn to use correctly. In this paper, bulldozers, loaders parts, a brief description of the displacement and its application, in order to play a role in helping the actual.