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Napoleonic Wars to the experience and theory of Clausewitz, who works as a representative of the second leap occurred in modern Europe.

以拿破仑战争的经验和克劳塞维茨等人理论著作为代表的第二次飞跃，发生在近代欧洲。

Although much progress has occurred,some pollution-control problems are addressed by the Clean Air Act and its amendments,but others are not.

虽然已经有了很多进展，一些污染-控制的问题在清洁空气决议和它的修正案中被提出，但是其他的就没有了。

In short when the earthquake occurred, it is essential to have a clear-headed, calm composed attitude.

总之在地震发生的时候，至关重要的是要有清醒的头脑，镇静自若的态度。

The central government came to a new high level of recognizing the science and technology after 1978, thus, a new policy of clerisy was established and a good political atmosphere, which benefits on popular science development, was formed. Besides, while the government's essential mission was transferred to economical construction, the popular science was accelerated by factors as economical development, social desire and economical treatment. Then, the prosperity of education set a good foundation for the development of popular science. Fourthly, the increase in the number of boffins and a fast advance on science and technology contributed to popular science's development intellectively. All these elements above caused the 2nd fastigium. However, during the last 1980s and early 1990s, confusion occurred to man's sense of worth in the period of economy transformation, which made popular science come to a downturn. As a result, the 2nd fastigium declined.

第四章对第二次科普高峰进行了分析。1978年以后，党中央对科学技术的认识达到了前所未有的程度，确立了新的知识分子政策，形成有利于科普发展的良好政治氛围；国家工作重心转移到经济建设上来，经济发展、社会需求和经济待遇等因素促进了科普的发展；文化教育事业的兴旺发达为科普的发展奠定了良好的基础；科技工作者队伍的壮大，科学技术的迅速发展，提供了科普发展的智力支持，这些综合因素促成了第二次科普高峰的到来。80年代末期到90年代初，由于在经济转型期出现了暂时的价值观混乱，科普工作陷入低迷，科普高峰消退。

To do this, let's look at the change that has occurred to your client area.

让我们先看下客户区域发生了什么改变。

The results showed that the different cut sites had the different RBSN and RQ. The superiority in RBSM occurred in the body segments with heart and clitellum, with head or only without head, the body segment number which remaining above 1/2, while the other groups had fewer RBSN.

切后都保留了心脏、生殖环、脑或只切除了脑，所剩体节数均在实验所用蚯蚓的体节数的1/2以上的蚯蚓体段，再生体节数明显，其它各体段组再生体节数不明显或无。

Wouldn't it be nice if we closed the file regardless of whether an error occurred or not?

难道没有一种好的方式来关闭文件而无论错误是否发生？

No attempt is made to close the file. Wouldn't it be nice if we closed the file regardless of whether an error occurred or not?

尽管我们代码变得更加的健壮了，但还有改进的空间。

In the early universe, collisions—and hence quasars—occurred more often because galaxies were packed much more closely together.

在早期宇宙中，星系碰撞以及因此而形成类星体的情况发生得更加频繁，因为当时星系之间的距离要接近得多。

Morphological conversion from spiralto coccoid forms occurred when HP was cultured with selenium and most of coccoid forms had fragmentary flagella and pilus; the effection of selenium to activity of urease, catalase, alkaline phosphatase is not exist or not evidence; selenium enable pET32a-vacA-E.coli BL21 which can express VacA produce yellow lipochrome, and the color become deeper with increasing of concentration of selenium; selenium can decrease expression of recombined VacA by restrain the growth of pET32a-vacA-E.coli,but can not influence activity and gene sequence of VacA; selenium can enhance the suppression effect of recombined VacA for gastric cancer cell, depress the index of cell multiplication and the forming rate of colony, decrease the number of cell in S period, increase total of cell in G period; After purified, the recombined VacA can be identified by VacA antibody.

体外实验结果表明：一定浓度的硒作用HP后，HP菌落数量随着硒浓度的增加而减少，菌落颜色由灰白色变为砖红色，溶血现象随硒浓度的增加和作用时间的延长而逐渐消失，HP的形态由弯曲形变为球形或椭圆形，鞭毛及菌毛出现脱落现象；硒对尿素酶、过氧化氢酶、碱性磷酸酶活性无影响或影响不明显；一定浓度的硒能使表达VacA的pET32a-vacA-E.coli BL21工程菌产生脂溶性砖红色色素，颜色随硒浓度增加而加深；一定浓度的硒通过抑制pET32a-vacA-E.coli BL21工程菌的生长，减少重组VacA表达量，但不影响其空泡毒活性及编码基因序列；纯化后的VacA重组蛋白可被VacA抗体识别，具有良好的抗原性。

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