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| geological time; geologic age; geological chronology; geological period | |||
| geologic chronology; geologic time | |||
| geologic period | |||
| geological age; geological time scale | |||
| geochron | |||
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| geological age | |||
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| stratigraphic-time unit | |||
| 地 质年代: 83 phrases in 13 subjects |
| Agriculture | 7 |
| Bridge construction | 1 |
| Desert science | 1 |
| Drilling | 3 |
| Earth sciences | 4 |
| Engineering geology | 3 |
| General | 4 |
| Genetics | 1 |
| Geology | 5 |
| Hydroelectric power stations | 2 |
| Oil / petroleum | 17 |
| Space | 1 |
| Technology | 34 |
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