课题

Based on the theory of heat transfer, hydrodynamics and the theory of metal solidification, by using numerical analysis technology, database technology and visual technology, this paper provided a simulation and check method for the process design to simulate the fluent field and temperature field of the filling solidification and cooling, and can predict the casting quality according to these fields, thus, by this way, improved the quality of casting draft design.

该课题就是为工艺设计提供模拟和校核手段，以传热理论、流体力学及金属凝固理论等为基础，利用数值分析技术、数据库技术和可视化技术等对铸造过程进行仿真，从而模拟出在铸件充型、凝固和冷却中的流场和温度场，并根据这些物理场对铸件质量进行预报，从而提高铸件工艺设计的质量。

The IWRM in the Yangtze drainage basin is a scientific issue with multi-disciplinary characteristics.

长江流域水资源综合管理是一个多学科、跨学科的研究课题。

On one hand, there is certain application background in most matrix types: On the other hand, can again draw forth the type of some matrices from the research of application program.

一方面，大多数矩阵类型都有着一定的应用背景；另一方面，从应用课题的研究中又会引出某些矩阵类型。

In this paper, some techniques in Virtual Reality, such as LOD Technique of 3-dimension terrain, frustum culling of 3-dimension terrain, levels of detail model, particles, dynamic texture and bump texture, were deeply researched, and some algorithms and methods are proposed by author. At the same time, some original problems, for example the analysis of rooms irradiation, the alarm of emergencies, quick drawing performed by display card and frustum-culling of models, are also involved in the research.

本课题对虚拟现实中的一些技术如：地形LOD技术、地形的视域裁减技术、多层次细节模型、粒子系统、动态纹理和凹凸纹理等进行了较深入的研究，提出了一些独特的算法和解决方案，并且讨论了建筑物房间的着光分析、绘制场景的硬件加速和景物的视见体裁减等一些较新颖的问题。

Many in the course , travel and hotels,food and drink, and shopping and money.

课程包括许多课题，涉及到旅游和住宿。餐饮。购物和金钱。

This issue is right three-wheeled motorcycle driving axle shaft drive the structural design.

本课题是对正三轮摩托车轴传动驱动桥的结构设计。

How to handle correctly the introduction of new drugs is a new problem hospital druggist are facing in the New Period.

如何做好医院新药引进工作是医院药剂工作者在新时期所面临的新课题。

Currently, the power for sensor node is supplied by dry battery or fastener battery. So it is a challenging task to design energy-efficient data gathering protocols for wireless sensor networks.

由于目前的传感节点由干电池或纽扣电池来供电，因此设计能量有效的数据收集协议是无线传感网络研究中的一个挑战性课题。

The best one is supplied by accumulator. The flowmeter designed in this paper is true utra-low power consumption, and it can be supplied by dry battery.

本课题设计出的LS旋转流量计真正实现了超低功耗，可以采用干电池长期供电。

The problem of the dual character is one in indigenous psychology, which is raised in the context of the discussion about the methodology on indigenous research.

两面性问题是本土心理学的研究课题，它是在探讨本土研究方法论的脉络中提出来的。

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