thalweg
['tɑl,vɛɡ]
- n. 海谷底线，海谷深泓线；最深谷底线
英英释义
- 1. the middle of the chief navigable channel of a waterway that forms the boundary line between states
- 2. a line following the lowest points of a valley
英文词源
- thalweg (n.)
- 1831, from German Thalweg "path along the bottom of a valley," from thal (see dale) + weg (see way).