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First, based on the measurements of absorption cross-section, the absorption characters of the main polluted gases in flue gas were deeply studied, and found that SO_2、 NO、 NO_2、 NH_3 had a character of approximate periods absorption at some wave band, which is a good chance of a new measurement introduced. Secondly, the factors about absorption cross-section of the gases measured, which affect on the measurement precision of DOAS, is studied deeply. The influence of pressure and temperature on absorption cross-section was given special research, and the compensated measures were given to the gases based on the character of the gases. Thirdly, in practical measurement, it must have been satisfied that the monochromator was consisted with the reference spectrum, which was based on absorption cross-section. In order to satisfy the consistency, the technique of reversion in the image was introduced, the reversions of spectrums were realized with wiener filter and noise elimination based on wavelet transform.

首先从吸收截面的测量入手，对烟气中主要的污染气体SO_2、NO、NO_2、NH_3的吸收特性进行详细研究，发现这些气体在局部区域具有准周期吸收特征，这为引入新的测量方法提供了契机；其次，对决定DOAS测量精度的被测气体吸收截面的诸多问题进行了深入研究，重点研究了压力、温度对被测气体吸收截面的影响，并针对被测气体的特征提出了相应的修正措施；再次，在实际测量中，要求所使用的光谱仪必须与以吸收截面为基础的参考光谱相匹配，为了满足匹配这一条件，文中将图像复原技术引入到光谱复原，使用维纳滤波和小波消噪实现了光谱的复原，将复原后的光谱与所使用光谱仪的仪器函数卷积，即可实现；最后，在对DOAS测量原理详细分析的基础上，对传统的最小二乘—差分吸收光谱法进行了详细的阐述，通过实验证实两点：1。

In a word, the mechanism can describethe NO conversion and the distribution of resultants as a function of temperatureand the component of exhaust gas.

模拟计算结果与实验结果非常吻合，该机理可以正确描述不同的气体组成和反应温度下，H_2选择性还原NO 的反应进程和还原产物分布。

The results indicated that reaction of HCN oxidation to NO finished in milliseconds, and radicals were important reactants or resultants of main elemental reactions during oxidation of HCN. Concentration of radicals had important effect on rate and extent of reaction.

计算结果表明，HCN氧化生成燃料型NO的反应在毫秒级时间内完成，占控制地位的基元反应都涉及到自由基，自由基的浓度决定反应的速率和进行程度。

A kind of catalyst for NO removal was prepared using surplus sludge from a municipal sewage treatment plant as raw material, with the method of impregnating surplus sludge in ZnCl2, Fe(NO3)3 and Mn(NO3)2 solution and then pyrolyzing it at high temperature.

以城市污水处理厂剩余污泥为原料，用氯化锌、硝酸锰和硝酸铁化学浸渍、高温热解制备脱除NO的催化剂。

NO. 3 prosperous Chengdu spring roads get through years in 82 baptism , this take "coming and going in crowds, if pressing spring platform " good intention business street down, pronoun becoming Chengdu charm, extend having many sides her influence.

NO.3 成都春熙路历经82年岁月洗礼，这条取&熙来攘往，如登春台&美意的商业街，成为成都魅力的代名词，多方面延伸她的影响力。

Bach's Partita No.2 in c minor BMV 826 was composed in 1727, and then in 1731, along with 5 other Partitas, published "Clavier-bung Part I".

巴哈&c小调第二号组曲&(Partita No.2 in c minor BWV 826)创作於1727年，1731年与其它五首组曲编辑出版&键盘练习曲第一册&(Clavier-bung Part I)。

The cytotoxicity of NO has a relevant role in apoptosis of endothelial cells induced by angiotensin Ⅱ,and can increases the activity of PARP.

NO含量增加导致的细胞毒性在血管紧张素Ⅱ引起内皮细胞的凋亡中有着重要的作用，在这一过程中PARP活性的变化是先上升后下降。

The ozoniser does not produce so much ozone that it needs an electrical ozone destroyer and does not produce NO from air feed gas that will produce a low-level range non-linearity.

此臭氧发生器不会产生太多的臭氧，它需要一个电子臭氧破坏器，不会从空气原料气中生成 NO 而产生低量程时的非线性

This article overviews the distribution and function of NO during the human fetal brain development , combining with the previous research.

本文结合前人研究结论重点对NO在人胚胎脑发育中的分布及其作用的研究结果进行综述。

Water quality indices such as TN, NH+4-N, NO-3-N, TP, DIP, DOP, PP were examined in both the head races and the offtakes during the two irrigation events.

分析了2次灌溉期的各引水渠和排水渠中总氮、氨氮（NH+4-N）、硝氮NO-3-N）、总磷、溶解性无机磷、溶解性有机磷、颗粒磷的变化情况。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。