比较数

The artificial neural network models of original spectrum and two pretreated spectra (firstderivative and standard normal variate, respectively) of osthol and imperatorin were established.

分别利用萃取物的原始光谱和两种预处理光谱建立了网络的数学校正模型，并把所得结果进行了比较，确定用一阶导数光谱所建立的模型为最佳网络模型。

The programming is transformed into general linear programming and is solved on the base of satisfactory degree of interval number and parameter.

引入区间数大小比较的满意度和参数，将其转化为一般的线性规划，并证明了转化后的线性规划的最优解是转化前的有效解。

The study of operator algebra theory began in 30times years of 20 century.

算子代数理论产生于20世纪30年代，是一门比较年轻的学科。

Author, secondly, starts from the approximate expandness of square root operator, perform mathematical calculations for finite difference operator in frequency-space domain, Fourier finite difference operator in mixing domain(frequency-space and frequency-wavenumber domain) and general screen operator in mixing domain, compare and discuss their precision of their wavefield, adaptability for lateral velocity variations, computation efficiency and stability.

第二，从平方根算子的近似展开出发对频率—空间域的有限差分算子、混合域(频率—空间域；频率—波数域)的Fourier有限差分算子、混合域的广义屏算子进行了推导并对其波场描述精度、对横向变速的适应性、计算效率和稳定性进行了比较与评述。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理，发现POCA是一种阴极型缓蚀剂，与HEDP、Zn~(2+)具有优良的协同增效作用；POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大，且其轨道电子布居数均大于1，因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用；对铜合金具有一定的腐蚀作用，但腐蚀作用比HEDP等有机膦药剂要小得多，同时与BTA具有优良的相容性，添加1mg／L的BTA则可以有效地防止铜合金的腐蚀。

Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.

本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用，在此基础上作了两个方面的工作：一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式，并对计算气动声学问题的代表性算例进行了大量数值实验，比较了该格式捕捉波数的能力；另外，针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题，研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法，并且给出有代表性的密度滑移面问题的算例，得到一致高阶精度的数值模拟结果。

We give left and right prediction of jump detection on basis of orthonormal polynomial. In theory analysis, we first give some theorems, then to proof the approximation, which is in a jump point detection by nonlinear prediction, can arrive one to number of samples. This result is considerable well. In the meantime, we study the approximate theory of measurement of jump point.

在理论分析中，我们首先给出了几个引理，然后证明了非线性预测法在检测单个突变点的逼近程度达到样本数的分之一，这样的结果是比较好的。

Compared the indicators of overeducation to those of international standard, Mode Model is the fittest indicator. Yet, Standard-Deviation Model is not a better one because of its normal distribution.

将教育与职业不对称此一指标用於国际比较，则以「众数模式」最为合适，「标准差模式」因统计分配的性质而较不合适。

There were different leaves structure between resistant and susceptible cultivars, the leaves structure studied included thickness of leaves, No.of palisade tissue, density of palisade tissue, thickness of the first line palisade cell, thickness of the second line palisade cell, density of inter-epidermal cell and density of exter-epidermal cell.

对大豆灰斑病抗病品种和感病品种的叶片组织结构，主要包括栅栏组织层数、栅栏组织密度、上下表皮细胞密度、蜡质含量及叶比重等，进行了比较研究。

The course contents include the introduction of sports statistics and SPSS, the relevant concepts, the input and editing of SPSS data as well as its processing, statistic descript, the comparison of means, the analysis of variance, parametric test, and the design of statistic charts and graphs as well as their formation, compilation and output.

教学内容主要有：体育统计与SPSS概述；体育统计的有关概念；SPSS数据输入与编辑；SPSS数据整理；描述统计；均数比较；方差分析；参数检验；研究设计以及统计图表、图形的生成、编辑与输出等。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。