path-line路径线法
Flight path reference line飞行航迹基准线
path path line迹线
path of line integral曲线积分路径
wellbore path center line井眼轨迹中心线
tape-path center line带路中心线;磁带轨迹中心线
fluid path line流线
path line equation迹线方程
path of flow line流线轨迹
discharging path line卸料轨迹曲线