(chiefly Physics)of, relating to, or arising from inertia (主物理)(与)惯性(有关)的;由惯性引发的 ■(of navigation or guidance) depending on internal instruments which measure a craft's acceleration and compare the calculated position with stored data (导航,制导)惯性的 ■(of a frame of reference) in which bodies continue at rest or in uniform straight motion unless acted on by a force (参照系)惯性的