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The positions of cam and dial were analyzed accompanied with their angular position, angular velocity and angular acceleration.

分析了凸轮和转盘的位置、角速度、角加速度的变化规律,给出了直角式精密分度凸轮的设计算法,同时计算了数控加工的刀位轨迹,并给出了四坐标联动数控加工和编程方法。

The program developed with the formula enable the coordinates for points and the parametric formula for curves in the orthographic projection to be transferred into ones in the axonometric projection, which can be directly displayed on the screen. In addition, except for assigned different values to elastic coefficient of the axial direction and the angles of the axes, it is generally adapted in drawing any of the axonometric projections.

用它编程,可以把正投影中点的坐标或曲线的参数方程,转换成屏幕上能够直接显示点的轴测投影的坐标或曲线的轴测投影的参数方程,而且除了赋轴向伸缩系数和轴间角的大小、正负不同的参数值外,对绘任一种轴测投影和相应正投影都具有通用性。

Because of the special structure of conical bearings and existence of spiral groove, conformal mapping and oblique coordinate transformation have been processed for calculated regions of the governing equations.

由于圆锥轴承的特殊结构以及螺旋角的存在,对轴承°的求解域进行了保角变换和料坐标变换。

In order to ensure the precision and reliability, this paper designs the GPS/Loran C/SINS/AHRS integrated system. In this integrated system, the self-adaptive federated Kalman filter is introduced to revise strap-down inertial navigation system; the heading angle attitude and heading reference system is used to ensure the convergence of heading angle; and the coordination transformation for Loran C is applied to eliminate the constant error of Loran C.

针对导航精度及可靠性,设计了GPS/罗兰C/SINS/AHRS组合导航系统,该组合导航采用了自适应联邦卡尔曼滤波的方法,通过闭环形式校正SINS,并用姿态航向参考系统代替捷联惯性导航系统输出的航向角以保证航向角的收敛,同时对罗兰C的测量值进行坐标变换以消除由于坐标系不同而带来的常值误差。

Aim at disadvantages of traditional measuring methods,such as lower precision and complicated operations,a precise measuring method for pitch circle helix angle of involute spur gear by CMM was put forward.

针对渐开线圆柱斜齿轮分度圆螺旋角的传统测量方法精度低、操作复杂等缺陷,提出用三坐标测量机精确测量圆柱斜齿轮分度圆螺旋角的方法,介绍了其测量原理及步骤,并进行了测量精度分析。

According to road designing data of mileage,coordinate,azimuth angle of tangent or straight line,curve radius,the length of spiral line from main point of curve or straight line starting point,we can calculate the coordinates of center line points and boundary line point s in any form of road under the same coordinate system.

根据线路设计资料提供的曲线主点里程、坐标、切线方位角、曲线半径、缓和曲线长度的已知数据,计算出任意线形的中桩、边桩在线路统一坐标系中的坐标,利用全站仪极坐标放样程序,以线路附近的控制点或加密点为测站,准确、快速放样各点。

In chapter 4, by AREELS, the Generalized Oscillator Strength Density Spectra were measured in the energy region from 56 to 66eV, with the incident energy 2. 5 keV and energy resolution 80 meV, at scattering angles from 0°to 6°, corresponding to the momentum transfer K〓=0.03~2. 01 a. u. The Fano profile parameters f〓 and q for the optically allowed transition 〓(0, 1)〓P°and the optically forbidden transitions 〓(1, 0)〓S〓and 〓(1, 0)〓D〓 were obtained as a function of K〓. With the hyperspherical coordinate wavefunctions, the dynamical correlation are discussed qualitatively. So, a new experimental way to study dynamical electron correlation effect is opened.In chapter 5, the widely used R-matrix theory was introduced. Then, the GOSDS for the optically allowed excitation series (1s〓)〓S〓→〓(0, 1)〓P°(n=2-4) were calculated by this method, and the Fano profile parameters f〓 and q were obtained sequently. So the electron correlation effect can be described by these parameters quantitatively, and the theoretical results were compared with our AREELS experimental results.

在第四章中,实验上,同样使用角分辨的高能量分辨快电子能量损失谱仪,在2.5keV电子入射能量和80meV的能量分辨下,测量了0°到6°散射角下的He原子双电子激发态在56~66eV的广义振子强度密度谱,这种情况,0°~6°对应的动量转移范围K〓=0.03~2.01a.u。,得到了光学允许跃迁的双电子激发态〓(0,1)〓P〓和光学禁戒跃迁的双电子激发态〓(1,0)〓S〓、〓(1,0)〓D〓的Fano线形参数f〓,q等随动量转移变化的曲线;观测到了几个强度很弱、能级很窄的光学允许和禁戒跃迁双电子激发态,用前人准确的理论结果进行了标识;通过比较弱共振〓(1,0)〓S〓和〓(-1,0)〓S〓的强度随动量转移K〓的变化规律,结合超球坐标理论计算的波函数,定性地阐述了在电子碰撞散射过程中它们各自不同的动力学电子关联效应,发展了一套在实验上研究电子关联效应的新方法。

Based on the engineering background of the precision guided bomb,the transform relations between different coordinate were investigated,and the effects of azimuth error was analyzed.A new azimuth computing method was derived.

针对某型制导炸弹的工程化研制,研究了制导炸弹在飞行过程中不同坐标系间的转换关系,分析了方位角误差对制导炸弹坐标转换精度的影响,推导了一个新的方位角计算方法。

In aspect of investigation on the binary phase splitting grating, Dammann grating, rectangle grating and also coordinate-phase modulate grating have been studied respectively. Detail analysis shows that the grating phase angle can inflect greater than coordinate to the splitting efficiency and equality rate.

在对二元位相型光学分束光栅的研究方面,在本论文对Dammann光栅、矩形孔径光栅以及坐标位相调制型光栅分别进行了研究,通过对光栅设计参数的变化对分束效率、分束均匀度的影响的分析可以发现光栅位相角对分束效率及分束均匀度的影响要比突变点坐标的影响大得多。

This paper introduces the method of traverse survey using direct measuring three-dimensional coordinates of control point by electronic total station instrument.

介绍采用蔡司C 20全站仪直接测定控制点三维坐标进行导线测量的作业方法,突破了传统的导线测量模式,不需分别测边、测角及内业计算就可自动测定三维坐标并自动平差。

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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。

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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。

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关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。