isotach

n.[气]等风速线

等值风线（指示风速相等的连线）

名词

1. Isotachs on a weather map are often used to depict areas of similar wind speeds.
天气图上的等值风线常用于描绘相似风速的区域。
2. The meteorologist used isotachs to analyze the wind patterns during the storm.
气象学家利用等值风线来分析风暴期间的风向风速。