directional gyroscope 定向陀螺仪 ; [航] 航向陀螺仪 ; 方位仪

directional gyroscope position 方位陀螺仪定位

directional displacement gyroscope 陀螺半罗盘

directional U gyroscope 定向陀螺仪

directional E gyroscope 定向陀螺仪

directional-control gyroscope 陀螺半罗盘

directional control gyroscope 陀螺半罗盘

directional gyro directional gyroscope 定向陀螺仪