价值工程

Elastic buckling and inelastic buckling of arch with and without out-of-plane brace under full span distributed load and concentrated load are investigated The effects of the brace to the out-of-plane buckling load of arch are studied.

对拱结构在全跨均布荷载和跨中集中荷载作用下的平面外屈曲性能进行了研究，其中考虑了屈曲前变形路径的影响和面外支撑情况，为工程设计提供了有参考价值的建议。

Army's Engineer Research and Development Center a ＄2.62 million contract to develop a Regenerative Fuel Cell System for 'Silent Camp' operation.

质子能量系统公司从美国陆军的工程研发中心赢得一份价值262万美元的合同，为&寂静阵营&作战开发一个再生燃料电池系统。

Army Research, Development and Engineering Command Acquisition Center, Aberdeen Proving Ground, Md., has awarded General Dynamics Armament and Technical Products a ＄34 million contract option for production, testing and field support packages for Joint Biological Point Detection Systems.

位于马里兰州Aberdeen试验场的美国陆军研究发展和工程指挥采集中心已授予通用动力装备与技术产品公司价值3400万美元的合同，为联合生物点源检测系统生产、测试和派出支持。

Compared with ring reducer which had same power, the balance ring reducer had many functions, such as low vibration noise, low cost and less production difficulty.

试验证明，平衡式环式减速器与同功率其他环式减速器相比具有振动噪声小的优点，同时降低了减速器制造成本和加工难度，具有重要的理论意义和工程实用价值。

Included among them are: characteristic frequency curve of reinforced medium; critical length of the anchor bar ; anchor bar density and nonuniform coefficient of the reinforced medium; embedded anchorage layer effect; bed plate effect; weak surface effect; distortion of the bow-shaped distributed state of the anchor bar frictional resistance and initiation, formation and development of the dominant glide control plane; criteria about the displacement velocity of side-wall stability status, critical status and unstability status, and the system of ordinate analysis method, et al

d。文中提出的若干新的概念、判据和分析方法，如加固介质特征频度线；临界锚杆长度；锚杆密度及加固介质不均匀系数；嵌固层效应；垫板效应；弱面效应；锚杆&弓形&受力形态的畸变与优势滑移控制面的产生、形成和发展；边壁稳定状态、临界状态和失稳状态的位移速度判据；纵坐标系分析法等，具有一定的理论价值，并对软土工程围护设计具有指导意义。

Itcan have thefunction of automation, self-detect, alarm, and image processing, thus comes out the electromechanical close-coupled one. The system is very convenient by using the touch screen. The design of hardware and software is unique.

载带机自动化水平的高低决定了电子元器件载带生产的产量及质量等，所以开发研制全自动的载带机具有重要的工程实用价值和重要的现实意义。

To optimize the design of core-box and to improve the quality of sand core, it is necessary and important to simulate the core-shooting process with numerical method.

为了优化芯盒设计、提高砂芯质量，利用计算机数值模拟技术来模拟射砂过程就显得具有重要的工程实用价值和理论意义。

Main research works are as follows:(1) Numerical simulation of turbulent flow and combustion in power plant furnace (2) Numerical simulation of fire spread and crown fire in forest fire behave (3) Numerical simulation of burning process of large space building (4) Numerical simulation of three-dimensional fluid flow of satellite cabin in microgravity environment (5) Numerical simulation of burning process of multi-rooms It shows that the ability of FAC3 and FZ code is strong and the code is widely used for practical problems.

研究工作主要涉及以下几个方面：（1）电站煤粉锅炉流场的数值分析（2）林火行为中火蔓延和树冠火等特性的数值研究（3）大空间建筑火灾烟气流动过程的数值分析（4）微重力条件下卫星密封舱内部流场的数值分析（5）多室火灾过程的数值分析研究工作表明，FAC3和FZ程序的功能较强，通用性较好，可对多种热过程现象进行数值模拟，在一定程度上讲，即可用于科学研究，又可用于实际工程问题，并具有广泛的应用前景和推广价值。

With two simple mechanics models,this paper discusses the fast design method of reinforced structure under module stool deck,explains under which circumstance should t.

作者利用两个简单的力学模型，探讨了模块支墩甲板下加强结构的快速设计方法，指出了在何种情况下应对模块支墩下甲板作加强处理，同时也提出了加强结构构件的估算公式，经有限元分析验证，结果令人满意，表明该方法对解决实际工程问题有一定的参考价值。

And for the deep-buried pipe, the methods of surface reinforcement and strenghening the surrounding rock from the tunnel face are adopted, which have the effective action on controlling the surface settlement. These measures ensure the safety of gas pipe, and have importat reference value.

对于埋深较浅段，采取了明挖加固法，对于埋深相对较大段，采用地表加固和洞内加固相结合的方法，有效控制了地表和管线的沉降量，确保了燃气管线的安全，对类似工程有一定的参考价值。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。