常到

First of all,we have given some of the basic concepts of differential equations, described the constant coefficient linear ordinary differential equation solution, for a class of second-order variable coefficient linear ordinary differential equation initial value problem, an approximate solution, the method is first unknown function of a definition for N sub-interval, and then in between each district within a constant coefficient ordinary differential equations similar to the replacement, the solution has been the problem as similar to the original analytical solution, and then gives a detailed second-order change order coefficient of linear homogeneous ordinary differential equation solution examples, the examples of the approximate method proposed in this paper is valid.

首先给出了微分方程的一些基本概念，讲述了常系数线性常微分方程的解法，针对一类二阶变系数线性常微分方程初值问题，提出了一个近似解法，本方法是先对未知函数的一个定义区间作N等分，然后在每一个小区间内用一个常系数常微分方程近似替换，所得到的解作为原问题的近似解析解，随后详细给出了一个求二阶变系数齐次线性常微分方程的解的实例，该实例说明本文提出的近似方法是有效的。

On the whole, we do as follows: Firstly, we list some conceptions and lemmas for later use. Secondly, we define δ-fine partitions for infinite interval and integral of vector-valued functions on infinite interval, and discuss the properties of integral, and characterize its primitives...

主要包括以下五部分内容：在第一部分中，我们介绍了本文所用到的基本概念和引理；在第二部分中，通过定义无穷区间上δ-精细的分法，我们给出了无穷区间上向量值函数的积分的定义，并讨论其性质，还给出了原函数的刻划；在本文的第三部分中，我们着重讨论了无穷区间上向量值函数积分的收敛定理；在本文的在第四部分中，我们首先应用无穷区间上向量值函数积分的收敛定理给出了常微分方程整体广义解的存在性定理，其次应用强积分对Banach空间常微分方程广义解进行了讨论；最后，在第五部分中，我们将模糊积分推广到无穷区间上并给出了其数值计算方法。

It runs on sushi and is usually suntanned.

该国运转的动力是寿司，很多居民常到海滩去将皮肤晒黑。

Rather let it be named from the fishes that swim in it, the wild fowl or quadrupeds which frequent it, the wild flowers which grow by its shores, or some wild man or child the thread of whose history is interwoven with its own; not from him who could show no title to it but the deed which a like-minded neighbor or legislature gave him ——him who thought only of its money value; whose presence perchance cursed all the shores; who exhausted the land around it, and would fain have exhausted the waters within it; who regretted only that it was not English hay or cranberry meadow —— there was nothing to redeem it, forsooth, in his eyes —— and would have drained and sold it for the mud at its bottom.

这个湖还不如用在湖里游泳的那些鱼的名字，用常到这湖上来的飞禽或走兽的名字，用生长在湖岸上的野花的名字，或者用什么野人或野孩子的名字，他们的生命曾经和这个湖交织在一起的；而不要用他的名字，除了同他志趣相投的邻人和法律给他的契据以外，他对湖没有什么所有权，——他只想到金钱的价值；他的存在就诅咒了全部的湖岸，他竭尽了湖边的土地，大约还要竭泽而渔呢；他正在抱怨的只是这里不是生长英吉利于草或蔓越橘的牧场，——在他看来，这确实是无法补偿的，——他甚至为了湖底的污泥可以卖钱，宁愿淘干湖水。

Tour operators are able to identify one of the sperm whales that frequents the canyon because of its extensive scarring from skirmishes with its prey, the giant squid.

旅游组织者是有能力识别巨头鲸，常到峡谷因为它的广大的伤疤从小争斗和它的猎物---大鱿鱼。

To sell one's birthright for a mess of pottage短语,来比喻to exchange something of lasting value for something that is of value for a short time only;to suffer a big loss for a little gain.这个成语常缩略为for a mess of pottage的形式.有时也可用to sell one's birthrights.

旧约。创世纪》第25章记述了这样一个故事传说：犹太族长以撒的妻子利百加怀孕期间，感觉到2个胎儿在她腹内互相踢打，就去问耶和华，耶和华对她说：&两国在你腹内，两族要从你身上出来，这族必强于那族，将来大的要服小的。&

To sell one's birthright for a mess of pottage短语,来比喻to exchange something of lasting value for something that is of value for a short time only;to suffer a big loss for a little gain.这个成语常缩略为for a mess of pottage的形式.有时也可用to sell one's birthrights.

旧约。创世纪》第25章记述了这样一个故事传说：犹太族长以撒的妻子利百加怀孕期间，感觉到2个胎儿在她腹内互相踢打，就去问耶和华，耶和华对她说：&两国在你腹内，两族要从你身上出来，这族必强于那族，将来大的要服侍小的。&

Carcassonne. He came to town only when he had classes.

为了论文的定稿，常到Carcassonne教授寓所去，他只有上课才进城来。

THE Central Asian "stans", as Uzbekistan, Turkmenistan, Kazakhstan, Kyrgyzstan and Tajikistan are known by the Western diplomats and oilmen who frequent them, conjure images of megalomaniac rulers, exotic nomads and mineral riches beyond compare.

乌兹别克斯坦，土库曼斯坦，哈萨克斯坦，吉尔吉斯斯坦，塔吉克斯坦——这五个中亚国家在常到该地的西方外交官和石油工人嘴里会被称作&五斯坦&。提到这片国度，人们眼前会浮现下面的图景：自我膨胀的独裁者，极富异国情调的游牧生活，永远也挖不完的金山和银山。。。。。。

My haunt goes to this paragraph of time on each big station fourdrinier wire the article that reads to stand about this locality net, discovery is to be blown badly, earn is little.

这段时间我常到各大站长网上去看关于本地网站的文章，发现都是吹得厉害，赚得少。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐