 |
| |||
| 水文年 | |||
| 水计年度; 水文年度 | |||
| 水文年度按雨季开始月份起算，美国规定10月 1日至次年9月30日 | |||
| 水文年 (度); 水年 | |||
| water year: 16 phrases in 9 subjects |
| Bridge construction | 3 |
| Desert science | 2 |
| Earth sciences | 3 |
| Electronics | 1 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Hydrology | 1 |
| Technology | 2 |
| Water resources | 1 |