力学

Objective: To determine whether magnetic attachments can protect the abutment tooth from the aspect of the mechanics analysis.

目的：从力学角度研究磁性附着体能否对基牙起到保护作用。

For there is no concrete mathematical expression to describe its complicate inner working process and theoretical calculation, and the movement of piston is a kind of nonlinear variable accelerated motion, we have to resort to computer technique to do theoretical research work.

油压夯管锤是高能量输出的油压马达，其工作性质是建立在流体力学、液压传动、运动学、动力学、机械学、波动力学等多学科基础上的流体机械，其内部工作过程和理论计算比较复杂，没有显示的数学表达式，而活塞的运动又是一种非线性的变加速的运动过程，因而，其理论研究必须借助电子计算机。

From the time the prophet of Anathoth, a man beloved of God, was obliged to live a life of suffering in spite of his guiltlessness and holiness from birth, Israel was no longer justified in judging its Messias by a mechanical theory of retribution and doubting his sinlessness and acceptableness to God because of his outward sorrows.

从时间先知的anathoth ，一名男子在心爱的上帝，是被迫居住生活的痛苦，尽管他的guiltlessness与圣德从出生起，以色列已不再是合理的判断，其messias由力学理论的报应和怀疑他清白和acceptableness给上帝，因为他的外向的辛酸。

Objective To investigate the contact mechanical characteristics of artifical acetabulum made of ultrahigh molecule polyethylene.

目的 考察人工超高分子量聚乙烯髋关节臼的接触力学特性。

It is expected that the present example analysis of difference and the differentiating significance between test result and test achievement may be beneficial to the teaching and learning of soil mechanics.

结合实例就试验结果与成果的差别及其区分的意义进行分析，希望对土力学教与学有所裨益。

OBJECTIVE: To investigate the biomechanics of Achilles tendon in vivo.

目的：探讨在体跟腱的生物力学行为。

Rock mechanics ; acid fracturing ; compressive strength ; limestone

岩石力学；酸压；抗压强度；灰岩

Based on indoor measurement of rock acoustic velocity,drillability, rigidity ,uniaxial compressive strength,the relationship between acoustic velocity and fragmentation parameters of rocks and that between the surface acoustic velocity and the underground mine logging acoustic velocity were explored by regression analysis.

在室内测定岩石声波速度、可钻性、硬度、单轴抗压强度试验的基础上，利用回归分析方法，探索声波速度与岩石机械破碎性能参数之间、地面声波速度与井下测井声波速度之间相关关系，建立了利用测井声波速度预测地层岩石机械破碎性能参数的数学模型，介绍了预测剖面及资料验证结果，并将这一方法用于计算PDC钻头可钻性以及中国南方海相碳酸盐岩地层的岩石力学参数。

The results showed with the increase of the acrylonitrile content, the impact strength and flexural strength of the copolymer increased at the same time.

结果表明，随着丙烯腈含量的增加，共聚物的静态力学性能有相应提高；相对丙烯腈含量为15%而言，25%处冲击强度和弯曲强度的提高率分别为232.91%和32.31%。

After a detailed analysis of the forces in subway train's running, the dynamics mathematical model of subway train is constructed; the eventbased control technology is adopted to solve the controlling of subway, the velocity and acceleration function with respect to the distance are deduced by introducing the action reference variable in the control problem which the object is to minimize the running time. The running scheme can be programmed in realtime, the delay caused by uncertain events is avoided. So it offers a new way for the metro research.

分析了地铁列车运行过程中的受力情况，建立了地铁列车的力学模型；将基于事件的控制技术应用到地铁列车的控制中，通过引入运动参考变量，求出在以站间最小运行时间为最终目标的列车控制中，列车速度、加速度等关于列车运行距离的函数表达式，从而可以根据列车走行距离来实时调整和规划地铁的运行规律，避免人为因素或不确定性因素导致的列车运行晚点，为研究地铁列车的规划提供了一种新的方法。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。