查询词典 dissipation of energy

The generalized force consists of the generalized conservative force, the generalized dissipation force and the generalized force in correspondence with the generalized coordinate except the generalized conservative force and the generalized dissipation force.

基于非自治有阻尼系统推导了第二类Lagrange方程，使用虚功原理，给出了广义力的求解方法，广义力由广义保守力、广义耗散力、除广义保守力和广义耗散力以外的对应于广义坐标的广义力这3部分组成。

Estimation of least upper bound of IC power dissipation Calculating IC power dissipation is a basis for low power design.

IC电源消耗的估计本文提出并实现了一种计算IC电源消耗最小上界的方法。

In order to find out primary and secondary factors influencing the power dissipation of corn rootstalk treatment device of no-tillage planter, soil-bin experiment was carried out in the laboratory. The power dissipation model of the device was set up based on the quadratic regressive orthogonal test of the influencing factors.

为找出影响免耕播种机玉米根茬处理装置的功率消耗的主次因素，对新研制的免耕播种机玉米根茬处理装置进行了室内土槽试验研究，对影响作业功耗的因素采用二次旋转回归正交试验，建立了玉米根茬处理装置的功耗模型。

The horizontal swirling flow internal dissipater tunnel being built in Gongboxia Power Station will be the first one reconstructed from a diversion tunnel whose dischargereaches to 1000m Vs and water head is more than 100m in china . Its schemes argumentation ,test research and future apply will have important meanings to the design .research and engineering application of internal dissipation discharge tunnel with swirling flow, will powerfully promote engineering application of this new kind of dissipation mode , which may solve some high velocity problems in high dam construction and provide a engineering example for technological and economical augmentation in a diversion tunnel reconstruction. It is of theoretical and practical importance to promote hydraulic structure researches and development.

公伯峡水电站右岸旋流内消能泄洪洞是国内第一个泄量达1000m／s、水头超过100m，即将修建的旋流式内消能泄洪洞，其方案的论证与试验研究以及建成后投入使用，将在国内外旋流式内消能泄洪洞设计、研究与工程应用中具有重要的意义，将有力的推动这一新的消能形式在工程中的应用，从而为解决高坝建设中泄水建筑物的高速水流问题与导流洞改建的技术与经济问题提供工程实例，对推动与发展水工水力学的研究与发展均具有重要的理论与实践意义。

By analyzing numerically the disks around a young stellar object and a black hole, we can obtain: the dissipation can not be neglected as a magnetic field is in small threshold value; in Keplerian disks, the magnetic field is smaller, the dissipation caused by anomalous viscosity and anomalous resistivity deviates from the ideal more greatly; the dissipative effects on magnetic instability become smaller as the radius r becomes larger.

通过分析年轻恒星周围和黑洞周围吸积盘的数值解可以得到：在磁场比较小的一段阈值内，这种耗散过程是不可忽略的；而且，磁场越小，由反常黏滞及反常阻抗引起的耗散过程对磁不稳定性的影响就越大；离中心体的距离r越大，耗散过程对磁不稳定性的影响越小。

Finally, the experimental results reveal that our proposed algorithm reduces up to 24% power dissipation for 64-to-1 MUX when compared to average power dissipation.

最后，实验结果显示我们提出的演算法在64对1多工器的情况下求出的功率消耗比平均功率消耗减少了24%。

The method of CFD numerical simulation is employed to replace experimental investigation. Hence, STAR-CD of the commercial software is used to simulate the outer flow field and heat transfer performance of integrated heat sink with heat pipes cooled by airflow. It is found that simulated results agree with experimental results well, which indicates that simulation method is reasonable and reliable. Further, simulated computations for different fin thickness, fin pitches and air velocities are performed to analyze their effects on heat transfer performance of heat sink. Finally, a new optimized structure of integrated heat sink with heat pipes is provided to meet future demands for cooling CPU and its heat transfer is also evaluated. For multi-heat source and higher dissipation power of electronic devices, the integrated heat sink with heat pipes attatched fins stagged in different positions of channels is presented and its flow and temperature fields are also simulated to enhance heat transfer. As a conclusion, all mentioned above are useful for the design of heat sink with excellent efficiency of heat dissipation and further research.

应用商业软件Star-CD对CPU集成热管散热器的外部流场和传热特性进行了数值模拟，将数值模拟结果和试验结果对比，验证了所提出的数值计算方法是可靠和可行的；利用此数值模拟方法对CPU集成热管散热器在不同散热翅片间距、厚度和气流速度下散热器的流动与传热性能进行了数值计算，分析了这些参数的变化对散热器传热性能的影响；针对未来CPU冷却的要求，确定了与最优气体流速匹配的最佳翅片间距、厚度的CPU集成热管散热器的新结构；利用试验评测了根据数值模拟提供的新结构开发出的新CPU集成热管散热器的传热性能；最后在场协同强化传热的理论的基础上，对CPU集成热管散热器的散热翅片错位排列来强化散热器的散热，满足未来大功率、多热源的电子元件的散热，为今后进一步优化散热器提供了依据。

In this paper, based on a pill-box window model with a conical-shaped alumina ceramic and Ansoft HFSS software, the relation of VSWR with various electrical parameters in the window is simulated; the effects of variations of the output window structure on electrical field intensity, microwave power flow and quantity of heat are analyzed; the electrical characteristics of frequency bandwidth, power capability and heat dissipation for the pill-box window with conical-shaped or disk alumina ceramic are discussed, which shows that, with a rational structure of the window with conical-shaped alumina ceramic, the output capability of microwave peak and average power may greatly be increased, the secondary electron emission may effectively be suppressed, and heat dissipation may become more uniform and be easier for cooling.

本文在前人工作的基础上，基于圆锥形陶瓷盒形输出窗模型，采用Ansoft HFSS三维计算软件的优化模拟，对该输出窗模型的驻波频率特性与各种结构参量的关系进行了优化模拟，分析了该输出窗片结构变化对其表面的电场分布，功率流分布、热量分布的影响，得出最优模型参数。并且探讨了陶瓷窗片的形状和几何结构对改善输出窗的频带特性、提高峰值功率和平均功率、抑制二次电子倍增方面的作用。

Analytical results show that the web reinforcement ratio of pile cap and strength of concrete are important to the ductility and dissipation capacity of the joint, and axial load ratio is important to the bearing capacity, stiffness, ductility and dissipation capacity of the joint.

摘 要：提出一种新型叉桩节点的抗震性能试验方案，并对这种节点进行了模拟抗震性能试验的非线性有限元分析，得到节点的滞回曲线、骨架曲线、延性系数、割线刚度及耗能能力。

1The main heat dissipation way of bulb is the pressure air from blower.(2)The design of Air Guide could improve the efficiency of bulb heat dissipation greatly.

经由热流实验与模拟分析的结果，我们可以归纳大致归纳以下几个结论：（1）灯芯的主要散热途径是藉由鼓风扇提供的强制气流，将热气带出。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。