方向性定位分支  orient motion

最佳定向方向  optimal oriented direction

航向安定性  directional stability

航向中性安定性  neutral heading stability

横向安定性  transverse stability

纵向安定性  Longitudinal stability

催化剂活性安定性  catalyst activity stability

弹性安定性  elastic stability

活性安定性  activity stability

塑性安定性  plastic shakedown

Z方向定位  Z-directional position

爆破的方向性  directionality of blast

倍兹孔定方向藕合器  coupler; Bethe-hole directional

笔画方向性  stroke directionality

边缘方向性  edge direction

不确定性方法  uncertainy method

测定方向  echolocate

超方向性天线  superdirective antenna

超方向性系数  superdirectivity