力学

In this thesis,we explore in detail the gas of 2D dilaton black holes and of the 2+1 black holes,and find that both the microcanonical ensemble and the canonical ensemble can beused to describe the two systems.

他们研究了四维黑洞的统计力学，认为只有用微正则系综才可能讨论这一黑洞气体的热力学。

Mixed formulation and Hamilton canonical equation of theory of elasticity.

弹性力学的混合方程和Hamilton正则方程。

Based on the Hamilton canonical equation for elastic bodies, and using its semi-analytical solution , the linear equation for each layer of laminated shells is established respectively.

以弹性力学中的Hamilton正则方程为基础，分别应用Hamilton正则方程的半解析法构建层合壳每一层的线性方程。

However,authors still do not find the relevant references on convergence and symmetric problems of the semi-analytical solution.Based on the semi-analytical solution for Hamilton canonical equation theory,the formulations of the clamp and simply supported and symmetric boundary conditions on the Hamiltonian element are derived by the variational principle.Several numerical examples show that with increase of meshes,the convergence rate of the semi-analytical solution is faster than the convergent rate of traditional finite element method based on displacement.

①在厚度上没有任何位移和应力模式的假设，由于传递矩阵方法的引入，从理论上讲，不受板壳厚度或层合板壳层数的限制；②采用弹性力学的Hamilton正则方程半解析法，可以克服边界的局部化效应[8]；③由于在平面内或圆柱壳的曲面内采用了有限元法，所以一般的板壳问题不受结构侧面边界条件的限制，在复杂工程板壳问题上具有广泛的应用领域。

Those variables for which it holds (e.g., momentum and position, or energy and time) are canonically conjugate variables in classical physics.

那些具有的变量(如动量与位置，或能量与时间)是经典力学里的正则共轭变量。

Diop and guard Flip Murray are both in assistant coach Jeff Capel's "free-throw school"- about 20 minutes set aside each day to improve mechanics at the foul line.

迪奥普和防范穆雷在助理教练杰夫卡佩尔既是"罚球学校"-每天拨出约20分钟，以改善在罚球线上力学。

During the teaching course of the statics analysis of capillarity's balance height,we should pay attention to the interest, inspiration and practicality, fully call out students' enthusiasm and initiative,develop students' thinking ability,and improve teaching quality.

在毛细现象平衡高度静力学分析的教学过程中，注重教学过程的趣味性、启发性和实践性，充分调动学生学习的积极性和主动性，培养学生的思维能力，提高教学质量。

It is proved that the model of Hertz, Capon and Lindel"of areidentical to Vakonomic model while the model of H"older, Pars andChaplygin are identical to Chetaev's model. The fact thatVakonomic model and Chetaev's model exist simultanously can betraced back to the early days of non-holonomic mechanics. These twomodels cause two problems the d- and - permutable problems.

论证了Hertz， Capon和Lindel"of的工作与Vakonomic模型相吻合，而H"older， Pars和Chaplygin的工作与Chetaev模型相吻合，Vakonomic模型和Chetaev模型两类模型并存的局面可以追溯到非完整力学发展的初期。1mm说明了伴随两类模型并存的现象而出现的两个问题 d-交换性问题和-交换性问题。

Effects of RE modification and heat treatment on carbide morphology and mechanical properties of cast semi steel were studied.

研究了稀土及热处理对半钢组织中碳化物的形貌与力学性能的影响。

The effects of different rotor configuration on carbon black dispersion and the mechanical properties of rubber compound were studied.

主要研究了不同转子构型对炭黑分散性及胶料力学性能的影响。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。