The vulcanization course of NR with traditional sulfur curing system was tracked in situ by FTIR and the effect of the new anti-reversion agent Z-500 on the vulcanization of NR was investigated.

利用傅立叶转换红外光谱法原位跟踪NR传统硫黄硫化体系的硫化过程，研究新型抗硫化返原剂z - 500对NR胶料硫化过程的影响。

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The result showed that the change regular of endogenous NR was similar to that of exogenous NR and there were two peaks during growth period.

研究表明，生育期间硝酸还原酶活性在内外源基质条件下的变化规律是一致的，出现两个高峰期；

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NR Non-Respirable Paper and Blankets- All NR fiber products have a minimum fiber diameter of 5 microns.

NR 非呼吸纸和毯子——所有的NR纤维产品最小直径均在5微米。

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V So this nR over V. And then, using the relation again, T we can just write this as p over T.

恒定温度下的dp/dT等于nR除以，再次利用状态方程，可以把它写成p除以。

麻省理工公开课 - 热力学与动力学课程节选

p So dV/dT at constant pressure is just nR over p.

所以恒定压强下dV/dT等于nR除以。

麻省理工公开课 - 热力学与动力学课程节选

All right. So we have that square root NR.

好，看看这个NR求平方根方法。

麻省理工公开课 - 计算机科学及编程导论课程节选

Whilst the review is on going, we will be suspending all NR project activity.

BBC: Toyota's ?88m investment on hold

Below is a three month price history chart comparing the stock performance of NR, versus WPZ and SE.

FORBES: Newpark Resources Stock Getting Very Oversold

One such stock is Newpark Resources ( NR), a Texas-based provider of drilling fluids, temporary worksites and access roads for oil and gas drillers.

FORBES: Gulf Oil Spill Boosts Onshore Driller