查询词典 mechanics

First, the development of the six degree freedom parallel mechanics is presented.

结合本课题组承担的实际工程项目，提出了本论文的研究内容和方法。

Delay differential equation is applied widely in many fields, such as Mechanics, Physics, Life Sciences, Economics, Medical Sciences and so on.

时滞微分方程在力学、物理学、生命科学、经济学、医学等诸多领域都有广泛的应用。

Ferromanganese is mainly used for steelmaking deoxidizer and desulfurizer and alloy addition. As alloy addition acceded to steel, it is able to improve the performance of mechanics of steels.

锰铁主要用于炼钢作脱氧剂、脱硫剂及合金添加剂，作为合金剂加入钢中，能改善钢的力学性能，增加钢的强度，延展性。

And then the influence of two of the damage models, the Kachanov and the gradient dependent constitutive equations, on the well posed properties of the fundamental equations in continuum damage mechanics is studied according to th.

首先从非局部理论出发，推导了应变梯度损伤本构方程；然后利用一阶拟线性偏微分方程组的特征理论，在一维弹性损伤情况下分析了两种不同的本构模型，即 Kachanov损伤本构方程与应变梯度损伤本构方程，对连续介质损伤力学基本方程适定性的影响。

These results are derivable from the theory of quantum mechanics.

这些结果是根据量子力学理论推导出来的。

On the basis of classical mechanics,the author derived a series of typical vector and matrix formulas for solving the problems of a particle that takes part in plane complex movements.

本文在经典力学的基础上，提出求解动点作平面复合运动的直接矢量导数方法和矩阵方法的定型公式。

With the development of quantum mechanics and solid state physics, materials design by agency of computation aid has been the trend to materials science.

随着量子力学、固体物理学、材料科学的发展，借助于计算机对材料进行设计已经成为材料科学发展的趋势。

The bridge structure suffered the moisture, frog and load attack successively in natural state, this results in concrete carbonization, reinforcing steel bar erosion, the surfer desquamate, the cross section dimension decrease, so the mechanics performance worsen, the bridge bearing capacity decreases.

在自然条件下，桥梁结构由于受到大气、水雾及外载的不断作用，引起混凝土碳化、钢筋脱钝锈蚀、构件表面剥落、截面尺寸减小，从而使混凝土结构或构件的力学性能恶化，使用性能降低，桥梁承载能力减小，严重的甚至引起人民生命财产的重大损失。

In order to study the fatigue of pressure vessel commonly encountered problem in engineering with large destructibility , based on the theory of fracture mechanics , the pressure vessel existing original crack was equivalent to the problem of infinite flat with center crack .

为了分析工程中常见的破坏性极大的压力容器疲劳问题，基于断裂力学理论将存在初始裂纹的压力容器等效为无穷远处作用均匀拉应力的含中心裂纹无限大板问题，解出表面半椭圆裂纹和穿透裂纹的应力强度因子；利用断裂判据得到裂纹的临界断裂尺寸；采用Paris表达式对裂纹扩展速率进行描述，推导出初始裂纹在不同裂纹尺寸和形式下的裂纹疲劳扩展寿命。

Many investigations show that randomicity of structures?parameter will bring large value of stochastic dynamic response of structures. Randomicity of structures?mechanics parameter may be dominant factors. Therefore, introduction of randomicity into system model of structure and using random system model are more reasonable than that of determinate system model. The work in this dissertation mainly consists of two parts.

众多的研究工作表明，结构参数的随机变异性可以引起结构随机动力响应的大幅度涨落，结构力学参数的随机性还可能成为主导因素，在结构系统模型中引入随机性的概念，采用随机结构系统模型是较确定性结构系统模型更为合理的一种选择。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。