查询词典 conic section

This section presents two kinds of characteristic schemes, one is the natural use of the usual backward Euler characteristic difference scheme ( [60] ) onto the triangular mesh, the other replaces the backward Euler's method by modified Euler formula to approximate the characteristic differential equation, so that the discretization for characteristic curve can get up to second order accuracy.

本节给出了两种三角形网格上的特征差分格式，第一种是通常的向后Euler型特征差分格式（[60]）在三角形网格上的自然运用，第二种采用§3.3、§3.4的离散思想，使用改进的Euler公式代替向后Euler公式来近似特征微分方程，使其对特征线的离散达到了二阶精度。

2 Each section will be given approximately equal weighting.

每项的比重大约是均等的。

In Section 1, without assuming operators to be continuous and cones to be normal, we use the Monchs compactness condition to study the existence and iterative approximation theorem of solutions and coupled minimal and maximal quasi-solutions for a class of nonlinear operator equations x = Ax, x under more extensive and weaker conditions than those used in [18] in ordered Banach spaces.

践一节中，利用M加ch的紧性条件，在比文献［18］更广泛的较弱的条件下，在不假潞子连续和拄酬的前提下，研究了Ball''crl空间中一描F线腑子方程X—川巳F）的解和最小最大耦合解的存在与迭代跳定理，并应用到Ban呐空间中非线性VOlterra型积分方程和常徽分方程的初值问题。

9 When the line cannot be flushed and the scope is small chlorine tablets are to be placed in each section of pipe, hydrants and other appurtenances.

当管道无法进行冲洗时，并且无法冲洗的范围很小时，应在每个管道，龙头和其他附件部份放置氯的药片。

Southern Pugliese also called Salentino, and reportedly a dialect of Sicilian on the peninsular section of Apulia

托斯卡纳方言（Tuscia dialect ，本语言是最接近标准意大利语的语言之一，但是本语言仍然和标准意大利语有差别

So my friends, I hope this section is able to send more like on the forthcoming Aquarian Age, which some have called a Golden Age.

所以我的朋友们，我希望这一节能够发布更多的即将来到的太空时代，或者有的人称为黄金时代。

The slewing ring code is represented in four-section with Arabic figures. And it is divided in dots.

此该方法表示的转盘轴承代号，用阿拉伯数字分四段表示，每段之间用"。"

Fifty-four SRAP primers were selected to analyze genetic variability among 28 accessions of Arachis section from 11 species. A dendrogram and principal component analysis were constructed based on our data.

利用54对SRAP引物分析花生属花生区组11个物种28份材料间的遗传变异。

There was also considerable polymorphism among the different genotypes of one same species.The genetic distance between cultivated peanut and several species including A.duranensis,A.villosa and A.batizocoi belonging to section Arachis was relatively more close in the comparison with some other species which was in accordance with peanut classification system.

栽培种花生与花生区组材料的亲缘关系相对较近，与花生属的植物学分类一致，其中A基因组的A.duranensis和A.villosa及B基因组的A.bati-zocoi与栽培种花生的亲缘关系更近一些。

In the"willow leaf"TEM horn, the characteristic impedance varies from 50Ω to the 377Ω free space impedance, thus its metal plates have shapes similar to willow leaf. The constant impedance TEM horn consists of two tri-angular metal plates, with it's characteristic impedance at arbitrary cross-section being a constant.

采用FDTD方法，对'柳叶'TEM天线、恒阻抗TEM喇叭天线及低频补偿TEM喇叭天线的反射特性、口面场分布、主轴辐射场特性、辐射场方向特性进行了分析，并对各自的特性进行了比较。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。