力学

After excavation, the regularities can be found on landform characteristics and locations. In this paper the unloading phenomenon of Xiaowan is concluded into five types: step type, bend type, debark onion type, plate fracture type and floor heave type. Then the five types are analyzed by the methods of engineering geology and mechanics.

最终得到如下结论：①小湾坝基开挖卸荷现象表现出多样性，并且在地貌特征和发生位置上具有明显的规律性；②结合河谷应力场特征，对小湾坝基开挖卸荷现象进行分析，并相应地提出了剪胀、纵弯曲张裂、错动板裂和上拱张裂等力学模式，合理地解释了小湾坝基开挖产生的卸荷现象；③板裂现象是高应力区发现的一种比较特殊的卸荷现象，它的产生需要比较苛刻的地质和力学条件。

These properties were mechanical properties, color and optical characteristics, density and deliquescent effect, thermal properties. On the basis of these, the mechanisms of excellent mechanical properties of the spider silk fibers were investigated on the following aspects.

本文以广泛分布于我国各地的大腹圆蛛为研究对象，在研究分析其三种主要的丝纤维——牵引丝、蛛网框丝、包卵丝的力学性能、色泽、密度与吸湿性以及热学性能的基础上，从以下几方面探索了蜘蛛丝优异力学性能的形成机理。

As a consequence, based on the water system denseness method and the tectonic d...

论文在分析地应力及地应力场特征和规律基础上，论述了地应力场主要组成部分；较系统地阐述了粗集理论的主要内容，应用粗集理论计算各因素对地应力场的影响，并提出基于粗集理论计算权重的方法；解释了图像滤波使图像边界模糊的原因，提出基于粗集理论的图像滤波方法；研究TM图像各波段的信息特征、最佳波段组合及各波段赋色；剖析构造形迹在反推构造应力场中作用，建立断裂构造形成时的构造力学模型；利用遥感资料解译了与新构造应力场密切相关的水系，在GIS支持下，应用水系密集度方法和构造力学模型计算了新构造应力场的方向与大小；分析了地形起伏对重力场的影响，并建立了相应的数学模型；研究了地应力在矿山巷道及开采设计中的应用。

Firstly,according to the mechanical properties of soft clays and the traffic load induced dynamic deviator stress ,the static failure deviator stress was determined.

首先通过确定车辆荷载引起的动偏应力和土层的力学指标计算出静力破坏偏应力，然后通过考虑土物理力学性质、循环荷载次数的累积变形公式计算软土地基中各土层在车辆荷载作用下引起的残余累积应变，最后用分层总和法计算总沉降。

An eigen matrix diagonalization method for solving this category of special mechanical quantities is derived.

在力学中，类似这些力学量的求解可归结为矩阵特征值或特征向量的求解。

This dissertation is concerned with the kinetics of the nonequilibrium dissociation and ionization of gases that are significant in the high temperature gas dynamics. There are two parts in the dissertation. In the first part, the kinetics of dissociating gas, a theoretical calculation is made of the nonequilibrium dissociation of the diatomic molecule behind a strong shock wave front.

中文题名高温气体解离和电离动力学研究副题名外文题名 The study of the kinetics of dissociation and ionization in the high temperature gases 论文作者王苏导师崔季平何宇中研究员范秉诚高级工程师学科专业一般力学研究领域\研究方向学位级别博士学位授予单位中国科学院力学研究所学位授予日期2001 论文页码总数125页关键词气体动力学电离复合非平衡解离速率振动－解离耦合馆藏号BSLW /2003 /O354 /1 本论文选取在高温气体动力学中具有重要意义的气体非平衡解离和电离动力学作为研究对象，包括两部分内容。

The interfacial surface and properties of glass fiber reinforced PET was studied by using Fouier transform infrared spectrometer scaning electron microscopy, dynamic viscoelastometer differential scattering calorimetry and mechanical measuring methods, the effects of coupling agent on the property of PET and its interfacial adhesion were examined.

用红外光谱分析、扫描电镜、粘弹谱仪、差示扫描量热法及力学性能测试方法，考察了玻璃纤维增强聚对苯二甲酸乙二醇酯的界面情况及力学性能等，并分析了玻璃纤维表面处理剂对PET树脂及其界面粘结性的影响。

The sustem laid a solid foundation for the development of other disci...

文章从历史的角度叙述了力学和它的发展，为我们纵观力学的发展提供了一定的参考。

In spite of the granular nature, soil has traditionally been modeled as a continuum. This continuum mechanics cannot get the precise solution while soil\'s nonlinear, discontinuous, large deformation, and strain localization behavior are considered. The discrete element method is based on discontinuum theory, and is pioneered by Cundall.

土是由多相介质组成的离散颗粒集合体，尽管研究者早已在土的散粒状属性上达成共识，但关于土体力学性质的研究还经常沿用连续介质力学方法，这种基于连续体小变形假设的方法在求解实际土体非线性、非连续、大变形、应变局部化问题时往往无法得到精确解答。

RESULTS: Stent materials play an important role in reducing inflammatory reaction and restenosis following stent implantation. As a medical material for humans, the features of stent should be meet the requirements of reliable distensibility, mechanical persistence, good flexibility and geometrical stability, possible small diameter, excellent blood compatibility, as well as good corrosion resistance. All of these depended on the mechanical and physical features of materials.

结果：支架材料的选择在减少机体炎症反应的强度和持续时间，减少支架置入后血管内再狭窄的发生起着重要的作用，作为人体医用材料，对支架各方面性能都提出了很高的要求，包括可靠的扩张性和力学持久性、良好的柔韧性和几何稳定性、尽可能小的外径，优异的血液相容性和耐蚀性，而支架上述特性都依赖于材料的力学和物理特性。

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