土壤碳、氮循环
soil carbon and nitrogen cycle
土壤碳和氮循环
soil carbon and nitrogen cycle
土壤碳、氮、磷密度
Carbon
nitrogen and phosphorus density
碳、氮循环
carbon and nitrogen cycles
the carbon cycle and the nitrogen cycle
碳氮循环
Carbon and nitrogen cycle
carbon and nitrogen cycling
carbon and nitrogen circulation
carbon-nitrogen cycle
carbon nitrogen cycle
carbon-nitrogen cycle (C-N cycle
cycle
carbo-nitrogen
等离子体稀土氮碳共渗
plasma RE nitrocarburizing
地质土壤环境
Geological and soil environment
农田土壤环境
Farmland soil environment
农业土壤环境
agricultural land environment
Agricultural soil environment