nitrogen cycle
短语词组
- nitrogen n cycle 氮循环
- nitrogen -phosphorus cycle 氮磷循环
- carbon n nitrogen cycle 碳
- nitrogen cycle bacteria 氮循环茵;氮循环菌
- soil nitrogen cycle 氮素循环
- Nitrogen cycle refrigeration 氮循环制冷
- the nitrogen cycle 氮循环;氮素循环;循环
- carbon nitrogen cycle 碳循环;碳 返回 nitrogen cycle