实际地

Based on the variation with the structural and geometric parameters for a real engineering, dynamic characteristics for a cable-supported lattice shell is studied with the block Lanczos method by means of the finite element model combined with beam elements, truss elements and cable elements.

选用梁元、杆元和索元的组合有限元模型，采用分块Lanczos法，针对一实际工程，通过改变结构参数、几何参数等诸多因素，较系统地研究了肋环型索承网壳结构的动力特性及抗震、抗风性能，对工程应用有一定参考价值。

In the actual manufacturing with NC machine, in order to check whether the parts design and the cutting route are right or not, generally it is tested by examing how the tool and work plane will move with the input NC programme and without an actual part. Once the movement does not match the prescribed process, there must be a change to the design graphics and the NC programme, and then test again, until the tested one matches the requirements. This inevitably leads to the waste of manpower and time, so it is necessary to make a computer simulation to realize the fastness and preciseness of the movement and path of the machine.

哈尔滨工程大学硕士学位论文实际数控生产中，为了验证图纸的设计及其工艺路线是否正确，在正式加工前，经常让机床在输入编制好的NC程序后空载运行，以观察刀具及工作台是否能按预期的要求运动，一旦不合乎要求，则须反复对程序和图纸进行修改，这势必造成人力、物力的浪费，因此有必要对刀具和工作台的运动过程及其轨迹进行仿真，以便及时、准确地进行正式加工。

Using Matlab/Simulink, the attack of atypical targets is simulated based on the dynamic simulation system of one anti-air missile's flying process and the best retardation time of fuse is calculated.

在该防空导弹飞行过程动态仿真系统的基础上，对非典型目标的射击进行了仿真，得出了最佳延迟时间，实际仿真结果表明极大地提高了射击效率。

Compared the calculated curve and the real assay curve we can make a conclusion that: this method can calculate the melting time of the fuse at the huge short current (more than 50 times of the current rating) with the error less than 5%; the resistor and time characteristic can also be acquired, it provided the date for overvoltage calculation of the fuse model. The research of the overvoltage during fusing process is based on short circuit test of the fuse.

由计算结果与实际试验曲线对比可得：该种方法能够比较准确地计算出较大短路电流下(熔断器额定电流的50倍以上)熔断器的弧前时间，误差一般在5%以内；同时还可以算得熔断器在弧前的电阻时间特性，为开断过电压仿真计算电路中的熔断器模型提供数据。

According to actual requirements,some strengthening methods such as steel tie rod ,sticking steel,steel brace and steel bearing are chosen to reinforce the cantilevers.

根据实际需要，有针对性地选用多种加固方法(钢拉杆、粘钢、钢支撑和钢支座)来加固悬挑梁。

By means of numerical simulation in different heat conduction processes,the steady-state temperature field in upper arm skin tissue,the temperature distribution and the burn depth threshold after 15 s exposure to a heat source at 90 ℃,the su...

通过数值模拟，获得了不同皮肤组织结构模型下上臂皮肤组织内的稳态温度场和90℃高温热源作用15 s后皮肤组织内的温度分布，以及皮肤组织热损伤深度的变化、常热流作用下皮肤组织表面的温升曲线和表面绝热条件下皮肤组织内的稳态温升分布。研究结果表明，皮肤组织的多层传热数学模型更能真实地描述皮肤组织内的传热过程，因此值得在实际工作中推广应用。

In this paper, a full flow model is given for calculating the average residence time of molten steel in non-symmetry multi-strand tundish to analyze flow pattern, the model is as follow:〓 The model can be used to calculate the volume fraction of the dead area、the piston flow and the mix flow, and is satisfactorily applied to the water model of three-strand tundish of Guangzhou Steel Works to analyze the data of the experiment.

本文认为在研究中间包内高温钢水的流动问题时，应该考虑钢水密度变化这个条件对钢水流动的影响，这样其结果更符合实际钢水流动规律。本文针对非对称多流中间包，提出了全流量模型计算多流中间包钢水平均停留时间：〓该模型也能够很好地计算多流中间包的死区、活塞流区、全混流区体积分数。

The first subject to the advertising industry on the environmental background of the current study based on reality, and from the spread of the evolution process of the media environment, audiences shape the evolution of the process of market and economic environment and national policy guidance as well as the social environment and the evolution of the process of public opinion, etc. discussed the ecological environment of the advertising industry on advertising exerts a subtle influence theory, is intended to combine the social environment through the development of the industry and actual cases to observe and verify Advertising thinking theory to make it too heavy at this more closer to its guiding the nature of the role of the characteristics of the formation and perfection of the development of China's national conditions in line with the theory, the consolidation of personnel training in the advertising industry advertising the basis of academic theory-building status, and further guidance on the practice of China's advertising industry.

本课题先就以广告业当下的环境背景等现实研究依据出发，从传播、媒介环境的演化进程，受众市场形态的演化进程、经济环境和国家政策的导向以及社会环境和舆论的演化进程等方面，探讨了广告业的生态环境对广告学学科理论潜移默化地影响，意在通过结合社会环境和实际业界发展的案例观察和思考中验证广告学学科理论，使其在此过重中更接近它指导作用的本质特征，形成和完善符合中国国情的发展理论，巩固广告业界人才培育中广告学学科理论建设的基础性地位，并进一步指导中国的广告产业实践。

A full-size fatigue life test equipment for coiled tubing is developed to simulate the conditions of coiled tubing operation in fields.

为了能比较真实地模拟连续管在实际作业工况条件下，即在弯曲和内压联合作用下的疲劳寿命，研制出了一套专门用来进行连续管低周疲劳寿命的实物试验装备。

Mechanics method can only solve simple engineering problems,so this paper analyses the two common structure of the sealing of tail shaft through finite element method.

针对经典力学法只能求解较为简单的工程问题的缺陷，通过有限元法对舰船艉轴的两种常用密封形式进行了动力学分析，将计算结果通过数值方法加以整合，并从中找到与实际运行过程相符的计算结果进行分析，直观地展现了两种密封结构的优缺点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。