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 axis of compliance柔性主轴
principal line of photograph象主纵线
principal stress orientation主应力方向角
principal angle of incidence主入射角
principal extensional stress主张应力
principal aberration lateral主旁(向)像差, 主横像差
principal curve segmentation分割主曲线
principal composition series主组成列