查询词典 refractivity

Quantitative structure-activity relationship studies showed that when the test grass was rape, their herbicidal activity was mainly related with substituent molar refractivity; when the test grass was barnyard grass, their herbicidal activity was mainly related with the electronic parameters of the substituents at the para-position of benzene ring.

定量的结构与活性关系研究表明，当作用对象为油菜时，化合物的活性可能主要与取代基R的摩尔分子折射常数有关；当作用对象为稗草时，化合物的活性可能主要与取代基R的电性参数有关。1-位为氢时，有利于对油菜生长的抑制；1-位为甲基时，有利于对稗草生长的抑制。

Taking the reflective phase hologram grating as an example, the spectral properties of the gratings were analyzed, for recording material with refractivity modulated in the convex curve and concave curve, by the coupled-wave theory.

以反射相位型全息光栅为例，用耦合波理论分析计算了记录介质折射率调制为上凸型和下凹型调制曲线的体全息图的衍射光谱特性。

With a radiosonde sounding occuring within 2 hours and 300 km of the ROE as reference, errors are found in the refractivity profiles inverted by this paper and by CDAAC in LT.

以距离该掩星地点300 km以内、观测时间差异2 h以内的无线电探空资料为参照，反演的折射率廓线与CDAAC的折射率廓线在低对流层都存在一定的误差。

Scattering of radar -wave by flunctuations of atmospheric refractivity is studied in this paper.

研究大气折射率起伏对雷达波的散射时，得到的主要結果有以下两点： 1。

Ok, let's get the refractivity working! Fig.10

好的，让我们让折射率起作用。

Via calculation we find the contribution of the frequency in the vapor term to the refractivity can not be neglected.

计算发现，水气项中的频率改正对折射率差的贡献是不可忽略的。

The impacts of the manufacture technology and dopants performance on refractivity distribution are studied systematically, which the refractivity distribution is measured by reflection.

预制棒的折射率分布决定着光纤的带宽，因此预制棒折射率分布的控制与优化是GI POF研究中的重要关键。

Based on the theoretical model of the optical and near-infrared wavelength refractivity which is recommended by the International Union of Geodesy and Geophysics's resolution in 1999, as well as, theory of Mendes(2004), we rededuce some theoretical formulae and give the practical expressions of hydrostatic and non-hydrostatic components of the refractivity.

本文基于国际大地测量与地球物理联合会1999决议推荐的光学和近红外波段的大气折射率差理论模型，在Mendes（2004）理论的基础上，对某些理论公式进行了重新推导，给出了大气折射率差静力学和非静力学分量的实用表达式。

For the first time, connected the optical characters and its components and density of jadeite. The additivity of refractivity extend the application on single mineral to jadeite which with some components, and illuminates the refractivity should be increased while C〓 increased.

首次将翡翠的光学性质与其成分、密度等联系起来，计算了翡翠中硬玉的理论折射率，折射率的加和性将适用于单矿物的理论推广于具多种矿物组合的翡翠，推导了硬玉的折射率与晶体结构和原子结构的关系，指出C〓在晶体中含量的增加会引起折射率的增高。

Based on the data of 5 years in 1970s with duct present and those of December 1990, refractivity at height of 1 km, the average gradient of refractivity and surface refractivity are obtained by regression of the refractivity profiles to exponential models. And it is found that the constants in the exponential relation of refractivity of 1 km above ground and the mean vertical refractivity gradient in the first kilometer height with the surface value of refractivity are 110.6, 0.002 9 and -8.6, 0.004 7 respectively according the data of the 1970s?

对上世纪70年代中5年内波导出现的数据和1990年12月份的全部数据的研究表明：贴地波导出现时，它们的值及其和Ns指数关系的常数分别是110.6、0.002 9和-8.6、0.004 7，地面上1 km处的折射率N1k及地面上第一公里内的平均折射率梯度dN1和地面折射率Ns的相关性比没有波导出现的情况好；而这两者相比，前者的结果又比后者好。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。