headward gradient头向梯度加速度
headward growth头向生长
headward sedimentation溯源淤积
headward erosion向源侵蚀;[地理] 溯源侵蚀;朔源侵蚀
headward acceleration头向加速度
headward end前端
headward deposition[地理] 溯源堆积
cirque headward冰斗溯源
headward detail溯源的
ADJ（形容词） (of river erosion) cutting backwards or upstream above the original source, which recedes 溯源的
ADV（副词） → a variant of headwards