geochemical cycle

• 地球化学循环

geochemical cycle的用法和样例：

例句

1. The microbe plays a key role in the bio-geochemical cycle of heavy metals.
   微生物在重金属元素的生物地球化学循环中扮演着重要的角色。
2. Ecosystem element balance has been a main focus of global change ecology and biogeochemical cycle research.
   摘要生态系统元素平衡是当前全球变化生态学和生物地球化学循环的研究热点和焦点。