查询词典 mechanics

To overcome the premature of simple genetic algorithm, the calculating efficiency of SGA is improved by the following two ways; Firstly, in order to ensure convergence of algorithm and reduce influence factor of convergence, elitist selection and adapted crossover and mutation operator are adopted. Secondly, because this study deals with finding minimize volume of structure, to quicken convergence of this problem, in line with mechanics criterion the paper carry out mutation to some genes in chromosome according to variations of internal force. This will let algorithms to search answer with our hoping directions.

针对基本遗传算法存在早熟的问题，本文主要从两个方面进行了改进，首先为了保证算法的收敛和减少影响算法收敛因素，采用了最优保护策略和自适应的交叉和变异算子；其次，由于本文研究内容涉及求结构最小体积问题，为了加快此类问题的收敛速度，本文结合结构优化中的力学准则，对个体染色体中的某一段基因按照内力变化进行变异操作，使得算法按一定方向进行搜索最优解。

In order to analyze stress mechanics of corm- gated pipe culvert on the condition of thaw settlement , the paper analyzes mechanical property of metal corm- gated pipe culvert and corrugated pipe in permafrost re- gion with large-scale finite element software.

为分析波纹管涵洞融沉下的受力机理，利用大型有限元软件对多年冻土地区采用的金属波纹管涵洞和波纹管本身进行力学性能分析，通过分析可知，金属波纹管本身具有较大的横向补偿位移的能力，波纹管涵洞对预防和彻底解决涵洞因融沉而导致的破坏较为有效。

Some changes and developments of basic quantum mechanics concepts, such as phase factor ,trmsition, corpuscular property and so on, are introduced.

介绍了量子力学中粒子性，全同性，相因子，跃迁等基本概念近年来认识上的发展变化，通过比较研究，给出了一些认识的演变过程。

As polypropylene fiber has virtues of good mechanics properties and enduring chemic corrasion , which can be used improve resisted tensile stress and toughness .

聚丙烯纤维是一种弹性模量低于水泥基基体的有机合成纤维，由于聚丙烯纤维具有很好的力学性能，耐化学侵蚀的优点，它可望用于改善基体的抗拉性能与韧性性能。

It bases on biology mechanics theory and herbalist doctor's massage correctitude bone theory .

它根据生物力学原理及中医推拿正骨原理设计面成。

Libermann.The early researcheson this kind of manifolds were closely related to Physics and Mechanics.But since1991,S.Kaneyuki published his result on the algebraic condition for the existence ofinvariant〓structures on a coset space,Lie theory has played the most impor-tant role in the study of this kind of manifolds.In particular,dipolarizations in a Liealgebra are closely related to the homogeneous〓manifolds.Dipolarizationsin semisimple Lie algebras and the homogeneous〓manifolds associated withthese dipolarizations have been studied by S.Kaneyuki,Z.X.Hou and S.Q.Deng.Inthe partⅡ of this thesis we study the dipolarizations in some quadratic Lie algebrasand the homogeneous parakahler manifolds associated with these dipolarizations.

Libermann给出的，早期的有关类流形的研究与物理和力学密切相关，自从1991年金行壮二发表了陪集空间上存在不变仿凯勒结构的代数化结果后，李群及李代数理论在这类流形的研究中起着主要作用，特别地，李代数的双极化与这类流形密切相关，半单李代数的双极化的相关几何，金行壮二，候自新和邓少强等人已作了研究，二次李代数是比半单李代数更广且带有非退化不变双线性型的李代数，本文主要研究了二次代数的双极化及相关几何。

Quantum mechanics, continuum and cosmological models provide evidence that no general approach is in sight.

量子力学，连续介质力学和宇宙模型证明，没有普遍适用的方法。

Cosmologist Sean Carroll of the California Institute of Technology in Pasadena says that it's "yet another experiment that tells us quantum mechanics is right" and that there "really is an intrinsic connection between entangled particles, not that some signal passes quickly between them when an observation is performed."

加州Pasadena科技学院的宇宙学家Sean Carroll说道，这次实验"又一次告诉我们量子力学是对的"并且"当实验进行时，纠缠粒子之间确实存在某种内部的联系，而不是一个信号快速传送的过程。"

Boye Laser Applied Technology Co., LTD is the forerunner in popularizing optical electron-mechanics, the national famous producer of laser equipment, the important demonstrated enterprise in generizing national science and technology productions, the hi-tech enterprise countrified by Zhejiang Province and also the private hi-tech enterprise in developing, producing and selling the industrial laser equipment.

博业激光是国家光、机、电一体化推广与普及的先行者，是国内知名的大型激光设备制造厂家，是国家科技成果推广的重点示范单位，国家火炬计划项目认证企业，是浙江省人民政府认定的高新技术企业，是专业致力于工业激光设备的研发、生产与销售的民营高新技术企业公司。

The analyses of mechanics characteristics and different influence zones corresponding to each stages of stress-strain curve are carried out for the country rock of underground opening.

对围岩的受力特点进行了进行了深入的分析，并给出与岩石的应力--应变关系的不同阶段相对应的围岩分区。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。