正

Then, we use the pattern method to represent the cube projection on Platonic solids, Archimedean solids and Catalan solids, and observe their dynamic variations.

在第二章至第五章，我们用切割的方法做出正立方体在正多面体、阿基米德多面体、卡塔兰多面体上的投影，并观察其动态变化。

On the basis of OCM, segmentation based on curvature radium is presented in the paper, in which curvature radium is calculated using parametric-surface fitting, and detecting edge points is realized from orthogonal direction, which ensure the integrality of edge points. Since the data is organized by cross-line in OCM, a new arithmetic, Double-direction Angle Difference arithmetic, is brought forward, which can pick up edge points more quickly.

物体的表面一般由多个曲面相交组成，要建立完整的几何模型，需要对测量数据进行区域分割——区分不同曲面的数据，现有的区域分割大多是对单视图的图像式测量数据进行的，但完整的CAD模型需要联合多个视图产生，本文在上面提出的三维正交模型的基础上，提出了三种区域分割方法：第一种方法是基于曲率半径的数据分区方法，通过二次参数曲面拟合计算局部曲率半径，从正交的多个方向进行检测，保证了边点提取的完整性。

The discussion is based on some property of arithmetic function.

为了判断整数是否为亲和数，在讨论数论函数性质的基础上，找到一种验证一个整数是否是亲和数的方法，从而给出了f=x2x+1不与任何正整数构成亲和数的结论，这里x为偶数，即关于y的方程σf(x=σ=f+y不存在正整数解。

But they are learning that the safest way to become president and to remain president is to be elected—a lesson Mrs Arroyo is teaching them.

但是，他们正学习阿罗约总统正授教给自己的一个教训：当选总统和保住总统的最安全途径是通过选举当选总统。

The country now has 300 to 400 people receiving ARV who are actively sharing their experiences in the community. In 2003, of the 100,000 people who required treatment, about 12,000 are now receiving ARV, with about 95% adherence.

这个国家现在有300到400位积极地在社会上分享他们的经历的人正接收ARV治疗，2003年，于100，000位需要治疗的人们当中，有12，000位目前正接收ARV，其中有95%比率的人持续著。

For them Ascot is a fantastic opportunity to get really, really dressed up.

对于她们来说，阿斯科特是真真正正能够穿戴一新的梦幻机遇。

The final results of empirical studies give as follows: the ownership of China institutional investors is negative to debt-asset ratio in the down range, positive to asset turnover ratio in the raise interval, positive to company size, earnings per share, and return on investment, negative to book-to-market rate, and in the later negative to the exchange rate and market risk.

最终实证研究结果为：中国机构投资者持股比例与资产负债率在股指下降时负相关，与资产周转率在股指上升时正相关，与公司规模、每股收益、投资回报率正相关，与账面市值比负相关，在后期与换手率、市场风险负相关。

S data, and get the parameter estimate of ARMA noise by Hannan-Rissanen s linear procedure, then the estimate is of strong consistency and is of asymptotic normal efficiency for Gaussian series.

若用所计算得到的回归残差作为数据，采用Hannan-Rissanen的线性估计法求ARMA噪声的参数估计，则本文证明了估计是强相容的，且对正态序列，估计具有渐近正态优效性。

First, based on all that have been mentioned above, the geometric constant D, which was introduced to characterize the quantitative difference between Birkhoff orthogonality and isosceles orthogonality, is studied further. Moreover, attainability as well as continuity and monotony of D in two-dimensional sequence spaces are presented.

基于上述原因，本文首先在已有结论的基础上，对用以刻画等腰正交和Birkhoff正交性之间量化差异的几何常数D进行了进一步的研究，解决了D的可达性，二维序列空间中D的连续性与单调性等问题。

At last,we apply Tikhonov reg-ularization method with closed operators to solvc nonlinear ill-posed problems,undercertain conditions,we obtain optimal convergence rates of regularized solutions.At thesame time,we also discuss the case when the"attainability"condition is not satisfied.

最后我们应用带闭算子的Tikhonov正则化方法研究非线性的不适定问题，在一定的条件下得到了最优的收敛率，并讨论了当"可达性"条件不满足的情况下的正则化。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。