 |
| |||
| mean tide level; half tide level | |||
| mean level | |||
| half-tide level | |||
| ordinary tidal level | |||
| 平均潮面: 48 phrases in 7 subjects |
| Bridge construction | 3 |
| Desert science | 1 |
| General | 1 |
| Geology | 1 |
| Navigation | 3 |
| Oil / petroleum | 4 |
| Technology | 35 |
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