abbr. National Register of Archives 〈英〉国家档案登记处
网络 全国步枪协会(National Rifle Association); 美国步枪协会; 全美步枪协会
The phenomena were discussed in combination with NRA results.
结合NRA结果对实验现象进行了分析。
The NRA was not directly correlated with nitrogenase activity.
硝酸还原酶活性和根瘤固氮活性之间没有直接关系。
The NRA decreased accordingly from the top to the base of the stem.
NRA在茎上各叶位中的分布由顶部向基部逐渐减少。
Chlorophyll, NRA and nitrate content was positively related to the application quantity of nitrogen.
芹菜叶绿素、硝酸还原酶活性和硝酸盐含量与氮肥施用量呈极显著的线性正相关。
The principles and analytical technique of nuclear analysis of scanning microprobe (micro NRA) was introduced.
本文主要介绍了扫描质子探针中微束核反应分析原理。