| 释义 |
nrr 英'en'ɑːr'ɑːr美'en'ɑːr'ɑːr COCA²⁸⁰¹³⁶⁺⁵
基本例句
=net reproductive rate 净生殖率,净再生产率,=noise reduction rating 噪音减弱等级,降低噪声级
In this paper, effects of application of N fertilizer and crop residues as manure on NRR N recovery rate of summer maize were studied.
本文研究了秸秆还田和 N肥施用对夏玉米 N肥利用率的影响。 cnki
Objective To explore the reference range and its associated factors of the nocturnal reduction rate NRR among the elderly.
目的探讨老年人夜间血压下降百分比 NRR的临床参考值范围及其影响因素。 cnki |