线汇

In Gregory scheme, not only the importance of the moist static energy is taken into account, but also the common difficulty of the moist convective adjustment scheme, the determination of the temperature profile, is obviated. At the same time, it can give the vertical profile of the apparent heat source Q〓 and apparent moisture sink Q〓. Gregory scheme has the clear physical image that includes the cumulus updrafts, cumulus downdrafts,cumulus induced subsidence in the environmental air, entrainment,detrainment and evaporation. In addition, the interaction between the cumulus and the environment is described by one-dimensional bulk model. It is simpler than the Arakawa-Schubert scheme and has no difficult to decide the spectrum of clouds accurately.It is propitious to operational use because of its simple calculation. Finally, Gregory scheme is not only suitable for moist convection of all types, but also for dry convection.

在该方案中，既强调了湿静力能能量的重要性，又回避了给定临界温度廓线的困难，并且还能给出真实的视热源Q1，视水汽汇Q2的垂直廓线；同时Gregory方案又具有很清晰的物理图象—积云中的上升运动，下沉运动，环境中的补偿下沉运动，以及卷入，卷出和蒸发等；此外，Gregory方案用总体云群模式来描述云与环境的相互作用，比型积云参数化方案简单，它避开了型方案中云谱需要精确设置的麻烦问题，计算容易，简便；最后，Gregory方案在湿对流中适用于浅，深，中不同的对流深度，并且也适用于干对流过程。

We proved that the necessary and sufficient condition that the developable surfaces touch the second focal surface along the orthogonal trajectories was that the base surface S was a developable surface.

证明了线汇中的两系可展曲面交第二叶焦曲面于正交轨线族的充要条件是原曲面是可展曲面，并给出了两叶焦曲面在同一条光线上两焦点相互对应下，保持渐近曲线相互对应的充要条件。

Compared with traditional DEM or TIN based methods, this pure vector approach obtains not only the topological structure of drainage system in planar graph, but also the valley distribution polygon range. Depending on geometrical computation and judgment of vector line, polygon, the structured properties in drainage representation is enhanced, avoiding the case of noise disturbance in DEM based method. The core algorithm makes use of the ability of Delaunay triangulation in detecting hierarchical structure of each contour line.

中文摘要：基于Delaunay三角网模型在矢量等高线基础上通过弯曲特征分析，给出了一种地形结构特征提取及谷地树组织的方法，与传统的基于DEM或TIN数据结构提取地形特征的方法相比，该方法不仅得到了谷地系统在平面图上的拓扑结构，还获得了河谷在空间分布上的汇水范围，依托矢量线、多边形的几何关系判断，增强了谷地树组织中的结构化，避免了DEM方法中的噪音干扰，方法的核心是Delaunay三角网在单根等高线弯曲深度表达上的层次结构识别。

Vortex lattice method is presented for calculating the loading distributions on all blades of propeller and hub which a number of small hyperboloidal quadrilateral panels are discreted.

螺旋桨采用离散涡环法，将桨叶表面和桨毂表面离散为一系列双曲四边形，在四边形网格中布置集中涡环和线源分布，根据物面条件建立方程得到涡和源汇分布的强度。

Professional letters of credit, T / T, or offshore D / P, such as trade finance and payment services such as business scope of the application vendors: Fujian, Guangdong, Zhejiang's private enterprises to import international trade intermediaries ------------------------------------------------------------------------------- CNC machine tool equipment imports import agent types: CNC machine tools, processing centers, single-function machine tool lathe, grinder, boring machine, drilling machine, planing machine, broaching machine manufacturing equipment such as spark machine, line cutting machine, forging forging machines and other equipment Note: Machine Made Brand Year Model Weight Specification (strict procedures, the entire package) services: Europe / Japan and South Korea and Taiwan / Hong Kong transit ------ United States and Canada --- Guangdong warehousing logistics and distribution throughout the territory.

提供专业信用证、T/T、或离岸D/P等贸易金融付汇等业务配套服务适用厂商范围：福建、广东、浙江的民营企业进口国际中间商贸易-------------------------------------------------------------------------------CNC机床设备进口代理进口类型：数控机床、加工中心、单一功能机床车床、磨床、镗床、钻床、刨床、拉床等制造设备火花机、线切机、锻造锻压机等设备操作注意：机器产地牌子年份型号重量规格服务方式：欧洲/日韩台/美加---香港中转---广东仓储---境内全程物流配送。

Coke would immediately augment its product line with Huiyuan's pure juices and nectars, which fetch higher prices than Coke's diluted juice products and offer better growth prospects than the maturing carbonated-beverages market segment.

若可口可乐得偿所愿，就能立即将汇源果汁的纯果汁和饮料产品补充进自己的产品线；汇源果汁的产品比可口可乐现有的果汁饮料产品售价更高，增长前景也好于日益成熟的碳酸饮料市场。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。