几何基础

In the base of above research, establish movement model of hyperboloid clutch with rollers and find the relation between force of outer race and moment of inner race. I establish mechanics model of hyperboloid clutch with rollers with differential geometry.

在上述研究的基础上利用运动转化原理建立了内外环与滚柱之间的运动模型，并利用微分几何的相关知识通过对施加在外环上的主动轴向力的分解及合成，求的其在内环上所产生的力学反应，建立双曲面滚柱加载器力学模型。

Then this thesis presents another SLAM algorithm-the Relative Map Filter, The RMF is however disadvantaged by the inability to guarantee consistency of the estimated relative map. The following sections introduce a new navigation filter - the Geometric Projection Filter or GPF. The consistency of the estimated relative map is enforced by the application of the constrained estimator to an inconsistent relative map produced by a standard RMF.

然后介绍了SLAM问题的结构，分析了绝对地图滤波器的性质，介绍另一种解决方法—相对地图滤波器，但是相对地图滤波器产生不一致的相对地图，因此在相对地图滤波器的基础上应用约束估计产生一致的相对地图，这就是几何投影滤波器，从而有效的解决了SLAM问题。

On the basis of optimized geometries,their electronic spectra were calculated according to INDO/SCI method.

以全自由度优化几何结构为基础，计算了各化合物的电子光谱。

Based upon the assumptions of small deformation, the unretractility of the beam's axis and the inextensibility of the plate's neutral surface ("the method of geometrical deformation constraint"), we can obtain the geometrically nonlinearized formulae of the beams and plates. Accordingly, the "dynamic stiffening terms"would be naturally cooperated into the dynamic equations of flexible multibody system if combined with the linerization of kinematic parameters at the proper stage.

利用杆类柔性体轴线的不可伸缩性和板类柔性体在中面内的不可伸展性，并结合小变形的假设，从而可获得杆类和板类的几何非线性变形表达式；以此为基础，在适当阶段对运动学参量进行线性化处理，可确保"动力刚化项"在建立柔性多体系统动力学方程过程中自然地形成。

On the basis of establishing planar cutting model and cutting equation, through analyzing the rigidity of technical system infrequency chart, change cutting coefficient and the angle of cutter etc, emphasis measuring and analyzing hard turning 45 hardened steel the damaged layer of finished surface cutting force the roughness on finished surface and researching on the mechanism of wear and damage of cutter.

在分析二元切削模型和切削方程的基础上，进一步研究了切削变形及其影响机理；通过工艺系统刚性的频谱分析，改变切削用量、刀具几何参数等因素，测量并分析研究了精切淬硬钢的切削力、已加工表面粗糙度、加工硬化及表面残余应力及刀具的磨损情况，基本形成了精加工45~#淬硬钢的切削基础理论。

Based on the process of 2003 Comprehensive Nuclear-Test-Ban Treaty intercomparison of atmospheric particle filter sample that organized by the organization, the structure of HPGe detector and the geometry of sample used in the comparison were described in detail.

在简要介绍全面禁止核试验条约组织临时技术秘书处组织的2003年度大气颗粒物样品国际比对的基础上，对此次比对活动中使用的高纯锗探测器系统、样品几何形状和屏蔽情况进行了详细描述。

Based upon the logic examination, this paper supplies a new conditional extreme value model for the proposition and generally reveals the wrong guide of Gauss's intrinsic geometry in logic.

在针对经典结论进行逻辑审查的基础上，为该命题重新构造了一个属于"条件泛函极值"范畴的形式定义，并大致叙述Gauss"内蕴几何"的在形式逻辑上必然存在的导向性错误。

This paper analyses character of joggle and introduces a way to develop joggle based on the rule of geometric modeling method, applying this method, the author developed a software to develop joggle approximately and to display the result by doing secondary development based CATIA using CAA. Finally, author shows an example to demonstrate the result of the software.

本文分析了下陷结构的特点并以几何模拟法为理论基础提出了下陷展开方案，使用CAA对CATIA进行二次开发，完成了弯边零件下陷区域展开功能模块的编写，实现了下陷区域的近似展开计算和展开结果的图形显示，并给出了实例。

On this base, also ameliorate assembling manner of each components in STGB by selecting materials, geometry parameter and machining technology. So increase consumedly the quality of joggle gear in STGB, and control effectively noise.

在确定齿轮传动形式的基础上，通过对齿轮的材质优选、几何参数的试验选择以及加工工艺的合理选择，同时通过对启动变速箱内各零部件装配方式的改进，使启动变速箱内齿轮啮合质量得到较大幅度的提高，从而有效地控制了噪声的产生。

The Errors Transferring Matrix is proposed in this dissertation on the basis of the study about the general law of geometry original errors, which is based on the theory of the Projection of Original error In The Direction of Applied Force.

首先，基于作用线增量法的基本原理，研究了机构的几何原始误差在运动中传递的一般规律，在此基础提出了误差传动矩阵法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。