partition function of translation

A family of translation 3-DoF parallel manipulators without plateform constraint singularities was obtained by three special orthogonal constrains provided by three limbs.

利用三条支链对平台所提供的特殊正交约束,得到了一种彻底避免运动平台奇异的纯平动三自由度并联机器人。

Based on the examples of the translation of the rigid body,this paper points out that if the rigid body is simplified as the particle in physical teaching in senior middle school,it will bring us many disadvantages.

本文从刚体平动的实例出发 ,指出在高中物理教学中将刚体简化成质点所带来的种种弊端 ,进一步说明新编高中物理教材中引进力矩概念的重要性。

The rotation of the earth can be neglected while discussing the tide generating force, it is reasonable that the orbit motion of the earth round the common mass center of the earth with the moon can be considered as a translation.

把地球绕地月公共质心的运动直接看成平动是完全合理的。

Based on the motion analysis of circular-translational-moving chemical mechanical polishing(CTM-CMP),the fluid film equation and Reynolds equation of CTM-CMP in polar coordinates were set up under unstable state.

根据圆平动化学机械研抛(C ircular-translational-moving Chem icalMechan ical Polishing,CTM-CMP)的运动关系,建立了极坐标下非稳态流体膜厚方程和非稳态下牛顿流体在CTM-CMP过程中的润滑方程。

Based on a 2-DOF pure-translation universal joint purposed in this paper, and combined with a universal pair and a prismatic pair, a new kind of 5-DOF link is obtained.

提出一种二自由度纯平动杆 ,该杆与虎克铰和移动副组合构成一个五自由度支链 ;在此基础上构造了一种五轴五自由度并联铣床 ,并对其进行了解析分析 ;样机测试表明 ,此并联铣床刚度与以往相比有很大改

Parametric modeling of the balanced elliptical motion shale shaker;

平动椭圆振动筛参数化建模

The shape and dimensional errors caused by electrode shaking in EDM were studied.

研究了电火花成型加工中因电极平动所造成的加工误差 ,提出了基于NC技术的电极平动补偿方法 ,开发出EDM电极平动补偿软件系统 ,并进行了对比实验验证。

The adsorption of methane on the clean surface of La2O3 is the translational energy activation adsorption ,its threshold value is 53.

通过分子束与表面散射实验确定甲烷在Ｌａ２Ｏ３清洁表面是平动能激活吸附，阈值平动能５３。

Halo orbit locates about the libration point in the Sun-Earth system and has no orbital plane focusing the Earth,which makes the attitude description and dynamics modeling for Halo-orbit spacecraft is quite different from that for the usual satellite around the Earth.

日地系Halo轨道位于平动点附近,且不存在以地球为中心的轨道平面,这使得Halo轨道探测器的姿态描述和建模问题完全不同于近地卫星。

The photogravitational restricted three-body problem in which the mass reduc-tion factors of two primaries q_1,q_2∈(-∞,1]are studied and an analytic method to estimate the number of libration points and to calculate their location is given in this paper.

文中给出一种平动点的个数估计和位置计算的分析方法。