nitrogen cycle
短语词组
- nitrogen n cycle 氮循環
- nitrogen -phosphorus cycle 氮磷循環
- carbon n nitrogen cycle 碳
- nitrogen cycle bacteria 氮循環茵;氮循環菌
- soil nitrogen cycle 氮素循環
- Nitrogen cycle refrigeration 氮循環制冷
- the nitrogen cycle 氮循環;氮素循環;循環
- carbon nitrogen cycle 碳循環;碳 返回 nitrogen cycle