Ekman current meter

• 埃克曼流速仪

Ekman current meter的用法和样例：

例句

1. So Ekman sat and looked at the film.Nothing.
   于是埃克曼坐下来仔细观察影片，可一无所获。
2. But how reliable are Ekman's methods?
   然而，埃克曼的办法有多可信呢？