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In principle, each of these operations could take an optional extra argument that represented the comparison function.

原则上,每个这样的操作可以接受一个可选的附加实参,表示比较函数。

The expected return on any security can be expressed as a linear function of its beta.

预期回报率的任何安全可表示为线性函数,其试用版。

According to the different signal characteristics, signal or can be expressed as a function of several independent variables.

按信号特点的不同,信号可表示成一个或几个独立变量的函数。

The definition of Wavelet Analysis is that shifting the mother wavelet e.g. which has limited energy, such as shifting for, then proceeding dimensions, we obtained wavelet basis function ,, which make the inside product to the function to analysis With the Fourier transformation to the and, then the equivalent frequency spectrum of wavelet transformation can be expressed as where 、 are the transformations of 、 respectively and i is an imaginary number unit.

小波变换的含义是:把一具有有限能量的母小波,如进行移位后,再进行尺度的伸缩得到小波基函数为然后与待分析的函数作内积,即对和作Fourier变换后,可得到小波变换的等效频域表示为:其中、分别是、的Fourier变换,i为虚数单位。

Using normal distribution transform probability model to represent a laser range scan.Not need features corresponded,but transform the discrete scan date to the piecewise continuous and differentiable probability density function,and using Newton's algorithm to optimize scan matching,so can build the 2D global map.

利用正态分布转换概率模型来表示激光扫描,不需利用特征对应,而是通过将扫描得到的离散数据点转换成分段连续可微的概率密度函数,并利用牛顿优化算法来进行扫描匹配,从而建立2维全局地图。

For these functions, a printable character is a character with a visible representation; whitespace is one of space, tab, vertical tab, return, newline, and formfeed; and punctuation is a printable character that is not a digit, a letter, or whitespace character such as space.

表中的这些函数,可打印的字符是指那些可以表示的字符,空白字符则是空格、制表符、垂直制表符、回车符、换行符和进纸符中的任意一种;标点符号则是除了数字、字母或空白字符以外的其他可打印字符。

Based on the analysis of the Jahn-Teller effect, vibronic interaction and the resolution of group representations, the possible geometrical configurations of 〓 have been derived for the first time. The Gaussian-98 program has been used to optimize the geometrical configurations of 〓 based on B3LYP/6-311G method. It is found that there are at least six different stable geometrical configurations for 〓 The results show that the multiplicity of 2S+1=7 for cluster 〓 is the most stable state among the eight geometry configurations.

基于多体项展式理论方法,研究得到了〓、HZrCo和〓三原子分子的分析势能函数,这些分析势能函数正确反映了它们的结构特点,可用于研究HZrCo、〓和〓的微观分子反应动力学。3从群的分解与直积理论出发,通过Jahn-Teller变形,vibronic相互作用以及群表示的分解的分析,首次导出了Jahn-Teller效应引起D〓和〓构型〓分子几何构型变化及其可能的电子状态。

At the same time, according to the related theories, theoretical relation of soil water profile was established under the condition of ponded infiltration and limited soil redistribution, the results were verified with measured data and proved to be reasonable.

此外,研究表明,导热率与土壤含水率、土壤水吸力、含盐浓度之间均存在良好的幂函数关系;在取得一定温控条件下的土壤水分与温度分布实测资料的基础上,根据Philip经验方程,通过差分法计算得出温差作用下的水分扩散率,该参数可表示为温度的幂函数形式。

Finally, making use of integral equalities associated with Bessel functions, the explicit expressions for elastic displacement and stress fields induced by these defects can be obtained in terms of elementary functions.

最后,通过一些Bessel函数的积分恒等式,便可给出在这些准晶中由这些缺陷所诱导出的以初等函数的明显表达式表示的弹性位移场和应力场。

The velocity distribution function and the average ion energy in different position of sheath are provided in the paper.

一般情况下,分布函数可表示为F,表示不同时间、不同空间位置上具有不同速度的某一种粒子的数量,它是一个六维相空间的方程。

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Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象,运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查,调查结果发现,石家庄市初中生物教师这一群体普遍存在职业倦怠,情感枯竭程度偏高,成就感偏低,去个性化程度最为严重。

In measurements of a day,generallyspeaking,the photosynthesis of birch in mesophytic habitat is better than that in xerophytichabitat(peak values are 12.8,10.33μmolCO2m-2s-1 respectively);that of sexual birch inmesophytic habitat is better than that of clone birch(peak values are 9.87,6.71μmolCO2m-2s-1respectively);that of young tree is better than that of seedling(peak values are12.37,10.05μmolCO2m-2s-1 respectively).

在一天中的各个时刻,总体说来,中生生境生长的白桦光合作用超过旱生生境生长的白桦光合作用(净光合速率峰值分别为12.8、10.33μmolCO2m-2s-1);白桦幼树的光合作用超过白桦幼苗(净光合速率峰值分别为12.37、10.05μmolCO2m-2s-1);中生生境有性白桦的光合作用超过无性白桦的光合作用(净光合速率峰值分别为9.87μmolCO2m-2s-1、6.71μmolCO2m-2s-1)。