查询词典 t distribution

The large sample approximation to the sampling distribution is often called the asymptotic distribution.

对样本分布的大样本近似常称为渐近分布。

This part has studied on such features of GPS data as time and spatial distribution, sampling intervals, distribution of samples and the coverage rate of road network.

论文主要研究了深圳市GPS数据的时间和空间分布特征、GPS采样间隔特征、路段样本量分布特征、路网覆盖率特征以及路网覆盖率与出租车数量之间的关系。

At first, author analyzes scarceness of resources, monopoly of resources and means of resources distribution from angle of economics. A conclusion can be drawn that investment of land-use is a reflection to scarceness of resources and monopoly of resources, and investment of land-use right is a more beneficial means of resources distribution.

首先，从资源稀缺性、垄断性和资源配置方式三方面，从经济学的视角进行了思考，得出的结论是：土地使用权出资是对资源稀缺性、垄断性的应对；土地使用权出资是一种效益较高的资源配置方式。

From the simulation,the distribution of single and bulk scattering was obtained and it was found that the scattering distribution was focused in forward scattering at a small angle,and that the scattered laser might be absolute polarized light.

通过模拟得到单分系和多分系的散射分布特征，得出散射强度主要集中在前向小角度散射的结论，并讨论了散射光的偏振特性，得出散射光存在完全偏振光的结论。

L31-34 Flexibility in the choice of electives and subjects fulfilling the Seance Distribution and Laboratory Requirements and the opportunity…permit…around…and future goals: A student is permitted to have considerable flexibility in the choice of electives and subjects fulfilling the Science Distribution and Laboratory Requirements.

在选择选修课程和选择完成学科必修课程以及实验课课程所要求的科目方面，学生都有相当的灵活性。

Secondly, we provide a two-level model to depict the one-, two-and three-photon fluorescent process and with it to calculate the one-, two-and three-photon fluorescence intensity dependence of the incident excitation intensity and time. We study the fluorescence intensity when excitation light's time distribution are square pulse、Gaussian pulse and sech pulse. We find that the influence of excitation light's time distribution on the two- and three- photon fluorescence peak intensity is larger than the one-photon fluorescence peak intensity. Two-level model can account for the behavior of saturation fluorescence.

然后用二能级模型解释了单、双、三光子激发原理，在理论上推导出了单、双、三光子吸收诱导荧光强度与脉冲强度以及脉冲作用时间的关系，并进一步研究了入射光时间分布分别为矩形、高斯型、双曲正割型时激发溶解在氯仿溶液中的C22H22N4O样品所产生的荧光峰值光强，结果表明激发光的时间分布对双、三光子荧光峰值强度的影响比对单光子的影响要大。

The positive research draws a general conclusion on the constitutional factors and distribution structure, and finds some new character of the constitutional factors and distribution structure of Chinese Seigniorage.

实证研究基本阐明了我国铸币税构成因素和分配结构，同时也得出了我国铸币税构成因素、分配结构的一些新的特点，并证实我国铸币税规模与宏观经济变量之间的关系。

Consequently, it is meaningful to systematically get optimal solving of LRP models. Contribution of the research is the innovation in big scale mathematical calculation of NP-hard problem and it is also the academic foundation of developed city logistics distribution systems on account of electronic commerce. The research has extraordinary significance to developed self-action logistics distribution software in large amount of electronic commerce dealings.

因此对LRP模型进行系统化优化求解研究具有重要的理论价值，其理论意义则在于针对NP-hard模型大规模数值计算的解法突破和创新，同时也是发展基于电子商务的城市物流配送理论的重要理论基础，这将为日后面对巨大交易量的电子商务环境下开发自动物流配送调度系统软件具有非常重要的现实意义。

The effects of pore width, temperature, and pressure on density distribution in the channel direction and on self-diffusion coefficient were investigated and analyzed, and the radial distribution functions of water in micropores at different temperatures were calculated.

分别考察了孔径、温度和压力对水在孔道方向的密度分布和自扩散系数的影响，计算了不同温度下水的径向分布函数。

Accumulating model of steel balls was used to simulate the pore distribution in the coating The pore distribution in the direction of coating thickness was self-existent and could not join to intercommunicating pore.

分析结果表明有两个主要的原因致使镀层不会产生水溶液介质的孔隙腐蚀：一是在镀层厚度方向上孔隙是独立的，不会相互连接形成通孔。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。