 |
| |||
| 正常深度; ★ 正常水深 | |||
| 正规深度 | |||
|
normal depth : 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Hydroelectric power stations | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
|
| |||
| 正常深度; ★ 正常水深 | |||
| 正规深度 | |||
|
normal depth : 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Hydroelectric power stations | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |