查询词典 t distribution

The author tabulate the figure distribution of every school in the states of Northern China and make maps of the distribution.

最后笔者把各派学者综合起来，叠加到一张地图上，显示北朝佛教义学分布的总体特征，并探讨北朝前后两期学派分布的变化。

The results show that the shape change in the zero points of aperture tangent electric field of some special elements influence the electrical performance of FSS tempestuously. This phenomenon is hard to explain by the laws of aperture tangent electric field distribution but has a close relationship to the mode of the currents distribution on the unit cell.

研究发现，部分单元的缝隙电场0点处的形状改变会显著影响FSS的频选特性，这一现象很难用缝隙电场的分布规律来分析，却可以用FSS层上表面电流反向模式来解释。

By testing χ2 and F distribution of data, it was proved that the method had a better approach to theoretical distribution curve than above two methods.

经对 χ2 分布和 F 分布的检验表明，该方法能较好地逼近理论分布曲线。

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

The mostly conclusion is as below: 1 The characteristic analysis of the expressway soil erosion: Expressway soil erosion is different from conventional soil erosion and other soil erosion of exploitation construction project for its 4 outstanding features, including imbalance of soil erosion distribution in time and space; Presenting either threadiness or pinnate distribution in space; The quantity of soil erosion is large;Erosion form is complicated and frequency of causality soil erosion occuring is large.

具体得出的主要结论如下： 1高速公路土壤侵蚀的特征分析公路建设土壤侵蚀区别于传统的土壤侵蚀，与其它开发建设项目中的土壤侵蚀也有所区别，有自己突出的特点，主要表现为时间分布上不平衡；空间上呈线状或羽状分布；土壤侵蚀量大；侵蚀类型复杂，诱发性土壤侵蚀发生频数大4个方面。

Uneven distribution of tideland sediment caused by the strong tidal current action in Hangzhou Bay, and nature ecological distribution of macrofaunal in the tideland, is a part reason of tideland environmental quality change.

杭州湾强烈的潮流作用导致的潮间带底质分布不均匀，以及底栖生物在潮间带的自然生态分布，是潮间带环境质量变化的部分原因。

Neutral network is a highly non-linear dynamical system. It has the ability of dealing with parallel distribution, and has high robustness and the abilities of fault tolerance, distribution memory and learning.

神经网络是一个高度非线性动力学系统，具有并行分布处理能力、高度鲁棒性和容错能力、分布存储及学习能力。

The formulas for confidence limits of percentiles and percentages and tolerance limits of a normal distribution are given by means of the noncentral t-distribution.

建立了正态分布置信限曲线方程，给出了其百分位值和百分率的置信限公式和容忍限公式。

Tradition method of risk tolerance believe that the yield distribution of option obey normal distribution the result always be asperity and the error is relatively great.

传统的风险度量方法假设期权的收益率分布服从正态分布，度量的结果往往显得粗糙，误差较大。

Distribution laws of divided link and sum link relate exceedingly to the distribution parameters in tolerance analysis and tolerance synthesis. And the numerical value of these parameters influences directly the assemblys reliability.

组成环和封闭环的分布规律与公差分析、公差综合所用到的各分布参数密切相关，分布参数的大小直接影响到装配成功率的高低。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。