![]() |
| |||
Precambrian (period) | |||
Precambrian period | |||
Pre-Cambrian; Pre-Cambrian Period | |||
Precambrian; Eozoic | |||
| |||
Pre-Cambrian era; Pre-Cambrian period | |||
| |||
Precambrian | |||
| |||
Precambrian period (system) |
前寒武纪: 20 phrases in 8 subjects |
Desert science | 1 |
Earth sciences | 6 |
Engineering geology | 1 |
General | 1 |
Genetics | 2 |
Geology | 2 |
Oil / petroleum | 2 |
Technology | 5 |