N use efficiency 氮效率 ; 氮素利用效率

N efficiency 氮效率

N fixation efficiency 固氮效率

Efficiency of N fertilizer N利用率

n Total efficiency of pump 泵的总效率

n utilization efficiency 氮素利用效率

N production efficiency 氮素生产效率

N physiological efficiency 氮素生理利用率

apparent n-recovery efficiency n的表观回收率