nitrogen cycle
短語詞組
- nitrogen n cycle 氮循環(huán)
- nitrogen -phosphorus cycle 氮磷循環(huán)
- carbon n nitrogen cycle 碳
- nitrogen cycle bacteria 氮循環(huán)茵;氮循環(huán)菌
- soil nitrogen cycle 氮素循環(huán)
- Nitrogen cycle refrigeration 氮循環(huán)制冷
- the nitrogen cycle 氮循環(huán);氮素循環(huán);循環(huán)
- carbon nitrogen cycle 碳循環(huán);碳 返回 nitrogen cycle