力学

It is showed that the matrix mechanics and the wave mechanics are equivalent in phase space.

证明了矩阵力学和波动力学在量子相空间表象中的等价性。

One of the oldest and most commonly used formulations is the transformation theory invented by Cambridge theoretical physicist Paul Dirac FRS, which unifies and generalizes the two earliest formulations of quantum mechanics, matrix mechanics and wave mechanics.

最古老之一和最普通使用公式是变换论，由剑桥理论物理学家保罗·迪拉克皇家学会会员发明，它统一和概括了最早的两个量子力学公式，矩阵力学和波动力学

It was conclude that the influence of the air pressure on the mechanical effect of the plasma shock wave does much matter with the defocus distance of target. The influence of target materials, target area and target structure on the mechanical effect of the plasma shock wave is analyzed.

论文还分析研究了激光等离子体声波和激光等离子体冲击波力学效应的关系，提出了利用激光等离子体声波特征量判断激光等离子体冲击波力学效应的方法。

On the basis of the improved structure and under the premise of meeting specification requirement, the light steel door-truss structure is optimally designed by changing, cycle checking and gradually reducing the cross section size of overall structural member with the ANSYS parametric design language. The mechanical properties such as changes in stiffness, strength and stability of the optimized structure are completely analyzed under three load cases.

基于改进结构，在满足相关规范的前提下，利用ANSYS软件的参数化命令流语言（ANSYS parametric design language， APDL），通过改变结构杆件截面尺寸，对整体结构杆件的截面采用循环校核、递减尺寸，并对轻钢门式桁架结构进行优化设计，分析了优化结构在3种荷载工况组合条件下的整体刚度、强度及稳定性等力学性能的变化，给出了改进前后与优化前后结构的力学特性对比。

Mechanical vibrations and mechanical wave as important knowledge in physics, it is not only the key content ...

机械振动和机械波是"复合概念"，本身包含着众多子概念，又把力学和运动学的诸多概念和知识综合应用于其中，同时在力学、电磁波、声学，甚至原子和量子理论中又都有着广泛的应用。

Contents include: Newtonian mechanics and relativity based, thermal and mechanical vibration, and wave, electromagnetic wave optics and quantum physics foundation etc.

内容包括：牛顿力学及狭义相对论力学基础、热学、电磁学、振动与波动、波动光学和量子物理学基础等。

The study of the mechanics of a living body, especially of the forces exerted by muscles and gravity on the ''.

生物力学有关生物体的力学研究，尤指肌肉和重力施加于骨架''。

The study of the mechanics of a living body, especially of the forces exerted by muscles and gravity on the skeletal structure.

生物力学有关生物体的力学研究，尤指肌肉和重力施加于骨架结构的力

In this paper, by determination of SFRC mechanical properties, the author make certain the proportioning of SFRC covering layer used in the old houses transformation for energy saving and menstruate the mechanical properties of SFRC and polystyrene plate complex wall.

本文通过对钢纤维混凝土力学性能的测定，确定了用于旧房墙体改造中钢纤维混凝土覆盖层的配合比，同时对钢纤维膨胀混凝土——苯板复合墙体的力学性能进行了测定。

BACKGROUND: Studies have been proved that different polymerization of poly methyl methacrylate has different mechanical properties, the mechanical properties in different types of PMMA is also different.

摘要背景：已证实不同聚合方式聚甲基丙烯酸甲酯的力学性能不同，且不同种类的聚甲基丙烯酸甲酯的力学性能也存在差异。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新