查询词典 distribution coefficient

Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

In part two, the empirical results indicate that the predictive ability of SGT is much better than GT、ST、t and Normal distribution. SGT can correct not only fat-tailed property, but also defects the low kurtosis of GT and t distribution. For the volatility of asset return setting, the assumption of volatility of assets price is more appropriate than Normal and asymmetric distribution which was often used.

第二部分以实证结果显示偏态一般化t分配的配适能力较一般化t分配、偏态t分配、对称t分配和常态分配为佳，亦即当金融资产报酬率存在高峰态与厚尾现象时，偏态一般化t分配不仅可以解决常态分配所无法捕捉到的厚尾现象，亦可修正一般化t分配与对称t分配无偏态的缺点，对於资产报酬率波动性之设定，比过去常使用的常态分配与对称的分配更为适当。

Study on fiber length distribution of taker-in droppings and card strips;2. The length distribution of sliver fiber under conditions of different feed plate gauge was tested by USTER AFIS and fiber length distribution in taker-in droppings and card strips was tested by cotton fiber length analyzer.

用USTER AFIS单纤维测试系统，对不同给棉板与刺辊隔距条件下的生条纤维长度分布进行检测，用罗拉式纤维长度测量仪对不同给棉板与刺辊隔距的刺辊落棉、盖板花中的纤维长度分布进行了检测。

There is the same tendency between CGHAZ grain size and the distribution of temperature gradient. The tendency of temperature distribution has the great effect on distribution of the final grain size. The microstructures in HAZ by DC flash butt welding were discussed.

模拟结果还表明温度梯度造成的&热钉扎&现象对HAZ晶粒长大有明显的阻碍作用，CGHAZ晶粒的大小与温度梯度的分布具有相同的趋势，并对最终的晶粒大小分布有重要的影响。

Based on the actual conditions of the 5342 fully mechanized caving face of Wulan Coal Mine, the 3-D distribution of gas in the face is tested by measuring points arrangement in the stereo grid. The isograms of gas distribution of the face are drawn. Gas concentration nadir distribution curve along the working face incline direction is drawn by method of seeking function minimum points. The method of calculating gas emission components ratio of the face by means of the curve is brought forward.

针对乌兰煤矿5342综放工作面的实际条件，采用立体网格状的测点布置，对该工作面瓦斯体积分数三维分布进行了测定，绘出了瓦斯分布等值线图，采用求函数极值点的方法，得出了工作面沿倾向瓦斯体积分数最低点分布曲线，提出了基于瓦斯体积分数最低点分布函数的瓦斯涌出分量比例计算方法。

An assumed Gaussian tail is addedonto the HO distribution. The calculations for〓 of the protron-rich isotones 〓〓 and 〓 and for 〓 the neutron-rich isotopes 〓were finished by theGlauber Model along with the modified density distrution. The calculated resultsshow that d values of these nuclei along with the modified density distribution arelower than the calculated ones along with the only HO density distribution.

为减小Glauber模型计算的反应截面与实验值的差别，本论文还对Glauber模型的输入密度形式进行了修改，在原单-HO分布基础上加一个高斯分布的尾巴，并对丰质子的同中子素核〓及〓与〓靶以及〓和丰中子的C同位素核〓与〓靶的反应截面重新进行了计算，结果显示在中能区的计算值比原来单一密度分布的计算结构有明显改善。

The statistical result of the distribution of fractures and vugs indicates that high mud content is unfavorable for karstification, and the sequence boundary has an obvious controlling effect on the vertical distribution of dissolved pores, and a weak affection on the distribution of fractures.

层序分析结果和缝洞统计规律对比表明：较高的泥质含量不利于溶蚀作用的发生；层序对溶孔的纵向分布有着显著的控制作用，而对裂缝的分布影响较弱。

Taking Xanthoceras sorbifolia Bunge as the research object, this dissertation made clear of its definite distribution regions and distribution features in China on the basis of a systematic and comprehensive investigation of its resource distribution, and made categorization of the types according to the natural characters.

本文以文冠果为研究对象，对其进行了资源调查，摸清了文冠果在我国的分布范围以及分布特征和规律，在资源调查的基础上对其进行了自然类型的划分。

In the model of dry-distribution,the leaf age of different plants leaves and the distribution of assimilation at different positions were confirmed based on the distribution process of assimilation in combination to the organ building process.

基于黄瓜器官建成的同化物分配模型中，在现有的同化物分配理论的基础上，提出了基于器官发育模型的同化物再分配过程模拟，将器官的形态扩展和同化物分配过程相结合，确定了不同植株叶龄、不同位置的叶片获得的干物质模型，将同化物分配和形态扩展过程有机地融为一体。

The vertical distribution of Aeolian sand current Based on the distribution function of lift-off velocity of saltating sand grain, this thesis develops a vertical distribution model of Aeolian flow linking with the number of lift-off sand grains percent time percent sand area. The thesis realizes the combination of microcosmic researches and macroscopical researches of Aeolian wind sand and solves primarily the isjunction of microcosmic researches and macroscopical researches.

4风沙流的垂向分布以本文获得的沙粒起跳初速度分布函数为纽带，结合本文获得的单位时间单位面积沙床起跳沙粒数，建立风沙流的垂向分布模型，实现风沙运动宏观研究和微观研究相结合，初步解决长期以来宏观与微观研究相脱节问题。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"