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The features of this dissertation are lie in: a The concept of"Influence Distance"was presented to quantitatively express"corner effect", systematicly studied on the influence of all factors on"influence distance". It could provide reference to angle designing from the view of heat treatment; b Deeply studied on the influence of shape factor to carbon concentration field. It could provide reference to gear designing from the view of heat treatment; c New model was set up to describe the two-dimensional concentration field of carbide dispersion carburizing. The shortcomings of"effective diffusion constant method"and"equilibrium constant method"were overcome in this model.

本文的特色在于:①提出了用"尖角影响距离"定量描述"尖角效应"的方法,并系统研究了各种因素对"尖角影响距离"的影响规律,从热处理角度为工件尖角部位的设计提供依据;②首次深入研究了齿轮的各种形状因素对浓度场的影响,从热处理角度为齿轮设计提供依据;③建立了能够更有效地模拟过饱和渗碳浓度场的数学模型,该模型克服了"有效扩散系数法"及"平衡常数法"的不足,与"最小自由能法"可互为补充。

Distance and dihedral angle constraints are used in distance-geometry and molecular dynamics computations to calculate and refine these structures.

他们将距离和二面角的约束效应运用在距离几何学和分子动力学的计算中使其对分子结构的测定更为精确。

It is defined by the direct distance between image surface and a threshold surface which should be constructed first.

通过构造一个阈值曲面,用图像曲面与阈值曲面间的有向距离来定义符号距离曲面。

When the consistency is checked, the "distance diagram"is employed. It is concluded that the axioms of a description satisfies the consistency iff there are no negative directed cycles in the distance diagram.

在验证ISITL描述的一致性时采用"距离矢量图",并认为一个ISITL描述满足一致性当且仅当其距离矢量图上不存在负矢量和的有向回路。

The forward kinematics is analyzed by choosing one of the mechanisms which have one, two,three or zero angle constraint.Wherein,3-CCC is a new parallel mechanism which has three angle constraints and three distance constraints, Calay\'s formular and direction cosine matrix are used to describe the rotation matrix respectively.By setting Dixon\'s and Sylvester\'s resultant with the three angle constraint equations respectively and using parameters replacement to deal with the distance constraint equations,the 64 order input-output equation of the forward kinematics is obtained under both of the methods.Numerical example confirms these theretical results and the motion simulation is shown in VC++ by integrating OpenGL.

3对高小山提出的广义并联机构进行了研究,以其中具有角度约束的并联机构进行了分析,选取具有一个、两个、三个和零个角度约束类型中各一个机构进行了运动学正解求解,其中3-CCC是一种全部由圆柱副构成的具有三个线线角度和三个距离约束的新型并联机构,文中分别用Calay公式和方向余弦两种旋转矩阵建模方法对其位置正解进行了分析,通过对三个角度约束方程分别构造Dixon结式和Sylvester结式,以及对三个距离约束方程进行变量代换分别导出了位置正解输入输(来源:4040ABC论文网www.abclunwen.com)出方程,得出64组位置正解,并使用数值算例验证了其全部根。

Second, the so-called thermal expansion will not reduce the disk head and the distance, as head of the aerodynamic principles of flight, under normal circumstances and always maintain a certain distance from the disc.

二、所谓的热膨胀,不会拉近盘体和磁头的距离,因为磁头的飞行是空气动力学原理,在正常情况下始终和盘片保持一定距离

To adjust a device in order to position it within specified tolerances, such as the read/write head relative to a track on a disk.

2,调整设备位置使它与某点的距离保持在特定范围内,例如:读/写头相对于磁盘磁道的距离

The height of coal seam, the dispensability and compressibility of broken roof gangue, and the size of the broken block of PKS are the main evaluating factors of water-flowing fracture, which are concerned with the critical distance between PKS location and mining seam.

对导水裂隙带高度产生影响的主关键层与开采煤层临界距离主要与煤层采高、顶板碎胀压实特性、主关键层破断块度等因素有关,可以粗略按7~10倍煤层采高计算该临界距离

As culture is responsible for shortening dissentience between cultures,so it should be set in the center of society.

他认为这种亲近感却无法回避我们在很容易克服地域的距离之后该如何应对文化的距离

On the basis of the above concepts, preference distance axioms fo r group deci-sion -making with order preference a re set up.

对于群体决策问题,文章引进供选方案间的偏爱距离和偏爱距离映射的概念。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。