力学

The quenching process computer simulation combined with practical production was developed based on the synthesizing of the present sophisticated achievements of numerical algorithm, heat conduction, thermotics and transformation dynamics, solid mechanics analysis, and the accuracy of model was testified. The studies of this dissertation made an attempt on the application of quenching simulation into the practical productions.

综合现有先进的数值算法、传热学、相变动力学和固体力学分析的研究成果，对淬火应力场进行结合实际生产计算机模拟，并验证了模型的准确性，为淬火模拟应用于实际生产作了初步尝试。

METHODS: The endodontic instrument was assumed as a metal conical bar. The normal stress of bending loads and the shear stress of torsional loads were calculated with the knowledge of mechanics. The relations between stress and such parameters as angle and radius of canal curvature, radius of instrument, polar moment of inertia, and metal elastic modulus were analyzed. The criteria for yielding and fracture of the instrument were discussed.

将根管器械刃部假设截面为圆的金属细锥杆，利用材料力学及断裂力学的原理与方法，分别计算根管器械在弯、扭载荷下的应力分布，分析应力与根管弯曲角度、根管弯曲半径、器械直径、器械横截面极惯性距、金属弹性模量等参数的确切关系；探讨器械屈服、断裂失效的准则。

METHODS: The endodontic instrument was assumed as a metal conical bar, the normal stress of bending loads and the shear stress of torsional loads were calculated with the knowledge of mechanics , the relations between stress and such parameters as angle and radius of canal curvature, radius of instrument, polar moment of inertia, metal elastic modulus were analyzed, the criteria for yielding and fracture of the instrument were discussed .

将根管器械刃部假设为截面为圆的金属细锥杆，利用材料力学及断裂力学的原理与方法，分别计算根管器械在弯、扭载荷下的应力分布，分析应力与根管弯曲角度、根管弯曲半径、器械直径、器械横截面极惯性距、金属弹性模量等参数的确切关系；探讨器械屈服、断裂失效的准则。

In order to predict and control the traction trafficability of a lunar rover, an algorithm for mechanical parameters estimation of lunar soil basing on linear-least squares method was presented, two key mechanical parameters, cohesion and internal friction angle were reversely estimated.

为了预测月球车的牵引力并进行牵引控制，提出了一种基于线性最小二乘法的月壤力学参数估计算法，对内聚力和内摩擦角这两个关键的月壤力学参数进行反求。

Terramechanics concerns studies on the interaction between vehicles and rough terrain in off-road locomotion. The main topics include prediction of vehicle mobility performance, optimum design of mobility systems and soil trafficability evaluation.

地面力学是研究越野行驶中机器与地面相互作用的一门力学学科，包括对机器通过性的预测和评价，行走机构的优化设计以及对地面可行驶性的预测判断等几个方面。

In this paper,triaxial compression tests are carried Out with various confining pressure and pore pressure.

本文通过不同围压、不同孔隙瓦斯压力下煤的三轴压缩试验结果，阐述了瓦斯对媒体的力学变形性质及力学响应的影响。

All of the properties of the sheet were tested. The results show that the mechanical and heat-resistant properties of the supporter can meet the requirements of turbogenerator, and the cost is relatively lower.

通过对支架的力学性能和热稳定性能进行测试，结果表明其性能尤其是力学性能和热稳定性优异，完全能满足发电机端部支架的技术要求。

It is found that,through sliding zone soil mineral component and water-soil interaction analysis,the principle reason of landslide is that coal measure strata turves soil contains certain proportional hydrophilic mineral ,and its mechanical index will fall greatly after water-soil interaction.

以京珠高速粤境北段k18+170~k18+225滑坡为例，研究了煤系地层滑坡机理，通过对滑动带土的矿物组成及其物理力学性质分析，发现该类边坡滑坡的主要原因是煤系地层中的泥炭土含有一定比例的亲水矿物，在水的作用下力学性质发生大幅度降低。

Six hypotheses were drawn based on the mechanics of tympanic membrane in anatomy, and then the mechanical equation was established.

依据耳膜在解剖学中表现出的力学性质，抽象出六条假设，并由此建立耳膜力学模型。

This model can be used in the analysis of the stability of bending-torsionof thin-walled structures and the analysis of ultimate bearing capacity of spatial member structures.

采用本文提出的几何非线性分析力学模型可进行薄壁空间杆系结构的弯扭失稳分析，为实现薄壁杆系结构的极限承载力分析提供了较为精确合理的分析力学模型。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。