For the construction of network virtual laboratories for engineering majors,this paper put forward six modules and then analyzed the problems in experimental teaching in traditional laboratories for engineering majors.It pointed out that the construction of network virtual laboratory for engineering majors is the solution to problems stemmed from the traditional laboratories.Moreover,it dwelled upon the advantages of network virtual laboratories,and emphasized on the relationship between network classrooms and network virtual laboratories.Finally,it discussed the role network virtual laboratories play in the teaching and research in universities,the promotion of which is helpful for the overall development of universities.

设计洪水流量为桥涵跨度及孔径的设计提供了可靠依据。目前,我国公路部门使用的设计洪水流量计算参数年代久远,没有将近30年的洪水变化情况考虑进去。论文介绍了我国于1960年和1979年两次对设计洪水流量计算公式的研究成果,并对流量计算参数进行深入分析。结果表明:有必要对现行的经验公式进行修订,以提高其适应性;建议采用水利部门的水文分区和设计洪水流量计算参数。

介绍了导弹易爆性的概念、分类及其影响因素等内容,探讨了导弹随机爆炸的杀伤因素和特点,并详细分析了导弹战斗部和固体燃料火箭发动机在受热、冲击波和冲击作用时的易爆性及其发展过程。

介绍了挪威先进面空导弹系统(NASAMS)的研制背景和分系统概况,简要分析了以先进面空导弹系统为基础研制的ADSAMS系统和HAWK-AMRAAM系统,最后分析了NASAMS系统的出口情况。

To standardized the management of the experimental teaching system in the laboratory,this paper proposed that the standardization of the management of the experimental teaching system should adapt to the teaching system of the academy,should clarify the classfication of experimental operation,and reconstruct the experimental system.It pointed out that the standardization should start from the perfection of the regulation in the laboratory,the scientific managemnt of the equipment,the improvement of experimental teaching,and the construction of open laboratories.It elaborated on the specific measures in the perfection of the standardization of the management in laboratories,and the management of virtual laboratories.

This paper introduces the survey method which uses microfilm iterative method to compile survey program in order to make lofting process achieve the effect of"the drawn point is just the actual location".The availability of this method is verified by engineering practice.It has a certain theoretical and practical significance.

In the article, we first have introduced the function of missile speed track system, and then have mainly analyzed state setting on the speed track system, in the missile speed track system design. After their analysis, we have solved various mixed wave interference in the missile speed track system, thus it is propitious to missile capture tracking target, therefore it has improved the capability of the missile accurate attack to the target.

以潜艇对反潜航空兵防御作战的现状为基础,提出了潜艇装备防空导弹的军事需求。介绍了国外潜射防空导弹的装备情况及其主要类型,总结了潜射防空导弹的特点,归纳了潜射防空导弹随着新技术应用而呈现出来的发展趋势。

论述了在登陆作战中影响登陆方登陆行动的时间因素、作用距离和烟幕数量,分析了抗登陆方阻止登陆方使用烟幕进行登陆的时间、距离和数量等相关参数的影响。

The pollution situation of chemical dangerous substance on radioactive substance or strong toxicity liquid is very complicated.They did tremendous harm to zoetic substance.We analyzed and evaluated their character,in the article we also go on with qualitative analysis and quantitative analysis for them.These are very important for situations of personnel activity and their safty in the disposition of forces area,and very tremendous on the influence for military command.

In the article it Analyzes the design for CPU module,input module and output module in the guided missile information processing system,by this way it efficiency can increase communication commutation speed for the guided missile information processing system,consequently improve better the advantage of the hardware modularization design technology.

Based on analyzing the forces of underwater unpowered motion of one certain submarine launched mine and the model of the ocean currents disturbance,the paper establishes the mathematical model of the mine motion.And also the analysis and the results of simulation under different depth and different initial conditions is provided by the simulation model which is established by the visual simulation software.

The temperature crack of masonry structure is introduced and its causes are also analysed. Then analytic calculation of temperature stress of masonry structure and its approximate calculation method are detailed deduced. Finally preventing measures of temperature crack are proposed.

Combining with one expressway coal gangue filling base,lab test about physical,chemical and engineering mechanical properties and in-situ test were performed for the application of coal waste to fill roadbed at some highway. It puts forward the construction technology and quality control inspection method in order to provide references for similar projects.

分析了确立导弹外形和性能的战术、技术和使用要求,介绍了影响导弹外形和性能的各种因素,并分析了导弹外形和性能对导弹作战效能的影响。

<正>为了更好的研究路基的沉降、侧向变形以及稳定性,本文采用PLAXIS程序软件模拟路基的变化,在试验中把路基断面近似认为无限延伸体,故可将路基模型处理为二维平面应变问题,特选取的4个典型断面,顶面宽为17.25m,高度分别为6m,5m,4m,3m,边坡坡率为1:1.5,中间填

The construction quality of sandy soil subgrade directly impacts the integral strength of subgrade, therefore scientific, economical and reasonable construction technique is the key to ensuring the construction quality of subgrade. Through systemic indoor test research on sandy soil, some valuable fruits are obtained, which can provide necessary basis for the design and construction of sandy soil subgrade of expressways.

<正>如果在水泥混凝土路面中掺入粉煤灰,不仅具有优化资源配置、提高经济效益和改善环保等效果,还可以改善混凝土的和易性、降低混凝土早期的水化温升,以及二次水化又可以改善混凝土的界面结构,但由于对掺入粉煤灰后混凝土的渗透、抗冻等性能的担心,工程中至今仍不愿意大量使用粉煤灰,因此,研究粉煤灰对水泥混凝土性能的影响具有积极的意义。