查询词典 mechanics

We begin with the reexamination of orbit mechanics of cometary particles to derive a set of formulae convenient to subsequent discussions and calculations.

利用此颈线解释向日尾并分析了其产生的可能性。

On the basis of diseased region, we divided cervical syndrome into 3 types. They were superior part (C1-C3), inferior part (C4-C6) and commixture. It offers clinical guidance for traction therapy from spondylous morphous and mechanics.

椎动脉型颈椎病根据病变部位划分为上颈段(C1~C3)、下颈段(C4~C6)和混合型，这从椎骨形态和力学角度等方面为临床牵引治疗提供了指导。

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

The working mechanics, the design method and comparison of technology and economic are investigated.

并对这种组合抗滑结构的工作原理、设计理论以及经济技术比较等进行了研究。

Even if in the modern western society, although Newton mechanics has established the complete, meticulous axiom system based on the strict and fixed amount experiments, there weren' t so distinctive characteristics in other realms, particularly medical science.

即便是在近代西方社会，牛顿力学在严格的定量实验基础上建立起完整、严密的公理化体系，但在其他领域并无如此鲜明特点，医学尤其如此。

This modern textbook provides a complete survey of the broad field of statistical mechanics.

这本现代教科书提供对统计力学的宽的领域的完整的调查。

According to related soil mechanics theories and calculation methods, a three-dimensional FEM computer program is developed in which bearing capacity and deformation analysis of single and group pile composite foundation can be performed.

根据相关的土力学理论和计算方法，开发了一个可以进行单桩和群桩复合地基受力分析三维有限元程序。

A theoretical formula of vuggy rock compressibility is proposed based on the theory of material mechanics and elastic theory.

根据材料力学和弹性力学的有关理论，推导出了溶洞介质的压缩系数计算公式。

Based on the integrated compressible fluid mechanics equations,using eigen value analysis,the new method of non-reflecting boundary condition was proposed for aeroacoustics simulation of disturbance in shear flows.

基于完整的可压缩流体力学方程，利用特征分析的方法给出了气动声学中数值计算扰动的边界处理方法。

In order to study impact mechanical properties of the basalt fiber reinforced concrete, the BFRC specimens with 0、0.1% and 0.3% fibre volume content were prepared. The Φ100mm split hopkinson pressure bar apparatus was adopted tocarry out the impact compressive experiment. The dynamic stress-strain curves were obtained. The impact mechanics performance of BFRC were studied through analyzing the impact compressure strength and deformation.

摘 要：为了研究玄武岩纤维混凝土（basalt fiber reinforced concrete，简称BFRC）的冲击力学性能，制备了纤维体积掺量分别为0、0.1%和0.3%的BFRC试件，采用Φ100mm分离式霍普金森压杆（split hopkinson pressure bar，简称SHPB ）设备对BFRC试件进行了冲击压缩试验，得到了BFRC的动态应力应变曲线，从冲击压缩强度和变形两方面研究了不同应变率下BFRC的冲击力学性能。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。