| |||
natural radiocarbon | |||
active carbon; radio carbon | |||
radiocarbon | |||
radioactive carbon |
放 射 性碳 : 24 phrases in 9 subjects |
Agriculture | 2 |
Desert science | 1 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 1 |
Engineering geology | 2 |
Oil / petroleum | 8 |
Space | 1 |
Technology | 7 |