查询词典 NR

For investigations on the modified character of 1, 2 - polybutadiene (1,2 - PB), the structure changes of natural rubber/ 1,2 - PB blends under thermal oxygen process with chemical stress relaxation and Flory 's theory of crosslinking structure were studied and compared with those of NR/styrene-butadiene rubber and NR.

用化学应力弛豫法和Flory交联网络理论分析了在热氧作用下天然橡胶／1，2－聚丁二烯（NR／1，2－PB）共混物硫化胶的网络结构特征，并与NR／丁苯橡胶、NR硫化胶作了对比，以考察1，2－PB对NR／1，2－PB共混物老化性能的影响。

Fumed-silica surfaces were modified with resorcinol and hexamethylenetetramine complex, and NR/M-silica nanocomposites were prepared in mixing and curing process. Structure and properties of NR/M-silica nanocomposites were investigated by mechanical testing ,cross-linking density determination, transmission electron microscopy, differential scanning calorimetry, fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The results showed that M-silica have obvious reinforcement effect on NR vulcanizate.

用间苯二酚与六亚甲基四胺络合物对气相法白炭黑进行表面改性，通过混炼和硫化制备了天然橡胶/改性气相法白炭黑（NR/M-silica）纳米复合材料，并通过力学性能测试、交联密度测定、透射电镜、差示扫描量热法、红外光谱和X射线光电子能谱等手段研究了纳米复合材料的结构和性能。

Signals of before and after NR decoding are entered to subtracter to obtain error signal, which is multiplied by imaginary part of the output of equalizer FIR so as to obtain output of discrimination phase.

本发明包括一个复均衡器的FIR、DFE、复乘器、加法器、NR解码器、减法器、实乘器、累加器、限幅器，它与均衡器结合，使解调后处理得到的复信号由I和Q路组成，经过复均衡FIR，输出仍为复信号，它与总相差φ复乘，进行相位解旋，之后取出实基带信号与DFE输出送入加法器得到均衡器输出，进入一个NR解码器后得到信号送入DFE作为输入，NR解码前后的信号进入减法器得到误差信号；它和均衡器FIR输出的虚部相乘得到鉴相输出，去噪声和限幅后进行相位解旋，去除相位偏差和相位抖动。

To perform an NR processing and an enlarging/reducing processing of a video signal, an NR buffer (104) is composed of, e.g., five line memories.

在进行视频信号的NR处理和放大缩小处理的情况下，NR缓冲器(104)由例如5个行存储器构成。

The effect of thermal and anaerobic ageing on the structure and properties of NR vulcanizates was studied.The crosslinking density and distribution of NR vulcanizates during ageing were determined with the method of devulcanization by using the chemical probes,and the physical and dynamic properties were also determined.

研究了热空气老化和真空老化对NR硫化胶结构和性能的影响，采用化学探测剂脱硫的方法测定了老化过程中NR硫化胶交联密度及交联键分布变化的情况，同时测定了硫化胶的力学性能和动态性能随时间变化的情况。

The results showed that,when environment-friendly oil KT20 was used in NR and NR/BR compound,the properties of mix,physical properties and wet skid resistance of vulcanizate were similar to those by using the comparison samples;by using environment-friendly oil KT20,the rolling resistance of vulcanizate changed slightly compared with using 3527MES and TADE.

结果表明，在NR和NR/BR胶料中，填充环保油KT20与对比油的混炼胶性能、硫化胶的物理性能和抗湿滑性能相当；填充环保油KT20，3527MES和TDAE硫化胶的滚动阻力相差不大。在NR胶料中填充环保油KT20，硫化胶的耐磨性能优于对比油硫化胶。

If the flyash microspheres are activized by aluminate ester and doped in NR, the extend ration and permanent set of NR is better than the NR doped with SRF and superfine CaCO〓, but the hardness and tensile strength is worse than the last one.

铝酸酯活化微珠填充NR制品在伸长率和永久变形性能上优于半补强炭黑填充NR和超细活性钙填充NR制品，但在硬度和拉伸强度上有所降低。

If the microspheres are activized by silane coupling agent and doped in SBR/NR, the coal carbonization time is longer than the SBR/NR doped with SRF.

硅烷偶联剂活化微珠填充SRF/NR体系的硫化加工过程中焦烧时间比半补强炭黑填充SBR/NR体系有所延长。

Results showed that hypochromism and red, shifted KAE absorption spectra were observed in the presence of DNA, and that synchronous、 fluorescence of DNA-NR was quenched with addition of KAE, indicating that a strong competition for DNA binding between KAE and NR existed, in addition, the relative viscosity and the value of melting temperature of DNA increased in the presence of KAE.

结果表明：加入DNA后，山柰酚的吸收光谱呈现减色和红移现象；山柰酚的加入使得DNA-NR同步荧光强度猝灭，表明山票酚对NR与DNA的结合为竞争性抑制；山柰酚的加入使得DNA的粘度增大，热变性温度升高。

The results showed that, NO-3-N contents and nitrate reductase activity had obvious diversity in different spinach varieties and different organs of the same plant. The NO-3-N contents in stem were the highest, followed by petioles, then mesophylls, and were the lowest in roots. When the ratio of root to shoot was higher, the NO-3-N contents in plants were lower. NR activity was higher in root especially in lateral root. The NO-3-N contents in mesophyll and petiole were negative correlated with the in vitro -NR activity and in vivo -NR activity in roots.

硝态氮含量以短缩茎中最高，叶和叶柄中次之，根中最低，且根/冠比越大的品种，其整体植株中的硝态氮含量越低；根尤其是侧根NR活性较高；叶肉和叶柄中硝态氮含量均与根中以内、外源硝酸盐为底物的NR活性呈一定的负相关。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。