强地

A numerical experiments to forecast a squall line storm system passing through the Oklahoma State is performed by using the Advanced Regional Prediction System developed by the Center for Analysis and Prediction of Storms at the University of Oklahoma in the United States.

运用美国风暴分析预报中心的改进的区域系统模式对移经美国俄克拉何马州的一个强雷暴系统进行了数值预报试验，结果表明，初始场中引入多普勒雷达观测资料后明显地改进了预报。

In the meantime, we also can change the status of the logic situations and describe the allying process and cooperative process. In addition, we represent the virtual enterprise ontology in the formal logic situation calculus and can define the core elements more accurately. It maintains the consistency and integrality of the ontology. Accordingly, the process model based on the ontology will have strong reusability, accessibility and consistency.

相应地，我们可通过逻辑情景演算这种形式化逻辑框架来表示虚拟企业本体论，以支持虚拟企业本体论中核心术语的更精确定义，维持其一致性和完整性；进而，构建于该本体论之上的虚拟企业过程模型就具有很强的重用性和可访问性，并能够保持建模过程的一致性。

The above three soybean varieties were treated with short-day of 12 h and long-day of 16 h in whole growth period, the different photoperiod treatments changed development process, podding-habits, plant morphogeny, and agronomical characters of different types of stem termination. And by this method photoperiod-sensitive and photoperiod-insensitive soybeans were divided, which is an important meaning at the production and popularization of soybean varieties.

对以上三个不同结荚习性品种进行两种较为极端的全生育期光照处理，短日照处理(12小时)和长日照处理(16小时)均可不同程度地影响不同茎顶类型品种的生育进程、结荚习性、株型和其他农艺性状，并且以此方法可区分出光敏感性相对较强和较弱的品种，对品种的生产和推广有一定的指导意义。

Race of powerful southwest field, low altitude, to Yingdede area in a steady stream offerred enough lunt; ceaselessly close ground layer is in low chamfer brim, force is not steady energy grow in quantity, the generation that is durative strong precipitation was offerred spark enoughly mechanism.

强劲的西南风场、低空急流，向英德地区源源不断地提供了充足的水汽；近地面层处于低槽边缘，位势不稳定能量增多，为持续性强降水的产生提供了足够的触发机制。

Ant Colony Algorithm is a new developed bionic optimization algorithm, which simulate the ants'finding food process. Because of its simple mechanism, plus-feedback parallelization, strong lustiness and excellent distributed compu- tational mechanism, it has shown its excellent capability and huge developing potential in solving many complicated optimization problems, and it has been successfully applied to production problem such as scheduling problems and routing problems. But it also has some disadvantages, it need longer searching time than others and tend to precocity and stagnation.

蚁群算法是一种最新发展的模拟昆虫王国中蚂蚁觅食行为的仿生优化算法，该算法采用了正反馈并行自催化机制，具有较强的鲁棒性、优良的分布式计算机制、易于与其它方法结合等优点，在解决许多复杂优化问题方面已经展现出其优异的性能和巨大的发展潜力，并已成功地应用于诸如生产调度、布线等生产问题。

Daum, the country's largest portal, took over Lycos of the US in 2004 but had struggled to turn around the loss-making US business as it could not compete effectively with bigger rivals such as Google and Yahoo.

韩国最大的门户网站Daum于2004年收购了美国的Lycos，但却一直难以将这家美国公司扭亏为盈，因为它无法与谷歌、雅虎等更强的对手有效地竞争。

But it is strongly nonlinear for vortex, hysteresis and magnetic saturation, so can hardly be identified by traditional identification model.

但是其存在涡流、磁滞和磁饱和等现象，机理复杂而且具有强非线性，用传统的系统辨识模型无法在较大的范围之内精确地逼近实际系统。

"Mandrake, or Mandragora, is a powerful restorative," said Hermione, sounding as usual as though she had swallowed the textbook.

曼德拉草，又叫曼德拉草根，是一种强效恢复剂，'赫敏好像把课本吃进了肚子里似的，非常自然地说。

"We found that a single large dose of vitamin D was sufficient to enhance a person's immunity to the bacteria," says Dr Adrian Martineau from Imperial College London, who co-ordinated the study.

"我们发现，一单位大剂量的维生素D能够有效地强化人的免疫系统，从而对于细菌有更强的抵抗力，"参与试验的伦敦皇家学院的Adrian Martineau博士说。

To solve this problem, based on the concept of graph theory we give a few models and arithmetic designs of virtual backbone in the environment of different application, and propose the corresponding routing mechanism with these virtual backbones. The major achievements are outlined as follows:The state of host's power or the time of host's online plays an important role in keeping stability of a virtual backbone. With a view to this feature, the paper introduces a simple and efficient heuristic algorithm for calculating the virtual backbone by seeking a minimum connected dominating set with maximal weight. The maximality of the weight-based choice of backbone nodes guarantees that the most suitable nodes have been chosen for the role of backbone nodes so that they can properly coordinate all the other nodes and keep stability of the virtual backbone in the network.

为了解决这个问题，本文利用网络图论中的一些理论，在不同的应用环境下给出几种虚拟骨干网的模型、构建及基于稳定性和节能的算法设计，并针对这些骨干网提出相应的分层路由机制，主要研究内容和贡献如下：考虑到主机的功率大小和在线时间长短对虚拟骨干中心的相对稳固性的影响，提出用基于极大权的最小连通支配集模拟虚拟骨干网；并给出其数学模型和相应的启发式算法，确保了性能强的主机担任骨干节点；通过优化规则确保骨干网的极小性，有效地减小了控制分组转发开销；最后进行了仿真验证。

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