短語詞組短語ammonia nitrogen excretion quantity 排氨量endogenous nitrogen excretion rate 內(nèi)源氮排泄nitrogen and phosphorus excretion 氮nitrogen excretion rate 耗氧率urea nitrogen excretion 尿n排出total nitrogen excretion 縂氮排泄endogenous nitrogen excretion 內(nèi)源氮排泄excretion of nitrogen and phosphorus 氮磷排放 返回 nitrogen excretion