principal act主要行为
principaladj.主要的;首要的n.本金;资本;校长;主角;委托人;主犯
principal point of objective物镜帚
principal parts of recycling回收主体
principal moments of inertia主惯性矩
principal lateral aberration主横象差
Principal - agent Analysis委托-代理分析
principal place of residence主要住址; 主要居所
principal resonant frequence主共振荡频率, 主鸣频(率)
Principal Development Agency主要研制机构
principal compressive stress主压应力
principal component analysis种量分析,主成份分析