瞬心,instantaneous center
1)instantaneous center瞬心
1.Instantaneous Center as Base in the Rotation of Rigid Body;关于瞬心作为基点的讨论
2.By applying the kinematical reverse revolving method and vector loop equation of kinematical chain,the formula for determining the positions of instantaneous centers of relative motion between two optional components in planar mechanism was derived.应用相对运动反转法及运动链矢量环路方程,导出了确定平面机构中任意2个构件之间的相对运动瞬心位置计算式。
3.According to the geometric characteristics of Euler Savary equation,this paper puts forward the graphic method for finding the instantaneous center of the connecting rod.根据欧拉 -萨伐里方程所包含的几何特点 ,给出了求连杆瞬心的图解法 ,与传统的博比利尔 (Bobillier)法相比 ,具有简单、直观、准确的优点 。
英文短句/例句

1.CONFIRMING OF THE CENTER OF ACCELERATION AT INITIAL INSTANT OF MOTION AND ITS APPLICATION;运动初瞬时加速度瞬心的一种确定方法及应用
2.The Solution of the Cam Outline of the Open Style Auto-Fix Support by Wink Center Method;瞬心法求解开启式自定心中心架平移凸轮廓线
3.The instantaneous center method of plane complex linkages;平面复杂机构速度分析的速度瞬心
4.Thisarticle dementstrates the theorem of momentum moment of instantaneous point is tenable and expounds using the theorem to solve mechanics problems of instantaneous is more succinct and effective.本文论证了对瞬心动量矩定理成立,并阐述了用它求解有瞬心的力学问题更简洁有效。
5.Theorem of momentum quadrature of comparative speed in movement of rigid body;刚体平面运动时相对速度瞬心的动量矩定理
6.Method of Projection and Instantaneous Centre to Research on the Accelerations of Points in a Planarly Moving Body;平面运动加速度分析的投影法及瞬心
7.Instantaneous Velocity Center and Its Application in Mechanism Velocity Analysis速度瞬心及其在机构速度分析中的应用
8.The Relative Speed Gear Instantaneous Center Theorem of Three-Gear Mechanisma and Its Application三齿轮机构的相对速度瞬心定理及其应用
9.ultra-short time film evaporotor离心式瞬时薄膜浓缩器
10.What is the instantaneous center of revolution?瞬时转动中心在哪里?
11.The point is named instant center acceleration.这一点称为刚体的瞬时加速度中心.
12.Young souls are mobile.年青人的心总是瞬息万变的。
13.A Study about Central-loop TEM Data Processing Methods;中心回线瞬变电磁资料处理方法研究
14.The experiment research of centrifugal pump transient characteristics基于Labview离心泵瞬态特性的试验研究
15.Time elapsed so quickly just like the snowflakes melting in her hands.时间就像手心里的雪花,瞬间也变得无影无踪。
16.There was a moment of truth in this. She knew it.这一瞬间这句问话是真诚的,她心里明白。
17.The movement was characterized by its concern with fleeting effects of light and its motion.这一运动的特色是关心光及其变动的瞬间效果。
18.That you can do some thing in an instant that will give you heartache for life.你在瞬间所做的事,可以叫你心痛一辈子.
相关短句/例句

instant center瞬心
1.This paper introduces a simple method to intintion is tically estimate the computingorder of multi-bar linkage instant centers by kinematic drawing and its applying attention.介绍了一种简便的,用运动链的图直观地判断多杆机构瞬心求解顺序的方法,及其应用。
2.In this paper,the author demonstrates that the angular velocity of absolute instant center between the slide block of slide bar around the rack and the slide block equals to that of the revolving slide bar by making use of the three core theorem,geometry and ultimate theory.利用三心定理、几何和极限理论首次证明导杆机构的滑块绕机架与滑块的绝对瞬心的角速度等于导杆转动的角速度,并建立了新公式。
3.The relationship between polhode and herpolhode of the instant center of a rigid body when it makes a plane paraller motion is presented.给出了刚体在平面平行运动时,刚体瞬心的本体极迹与空间极迹间关系的一种证明方法。
3)instantaneous center of rotation瞬心
1.According to theorem of motion of centre of mass and theorem of moment of momentum about centre of mass, we derive the theorem of moment of momentum about instantaneous center of rotation.从质心运动定理和相对质心的动量矩定理出发,导出了相对瞬心的动量矩定理。
2.In this paper, according to theorem of moment of momentum about a fixed point, we give theorem of moment of momentum about instantaneous center of rotation.以瞬心为参照点,根据相对于固定点的动量矩定理,导出了相对于瞬心的动量矩定理。
4)Instantaneous centre瞬心
1.This paper presents that the instantaneous centre orbit demonstrator, under two normal conditions, shows in a directly perceivable way the slideless rolling mechanic state of the local onbit sig nailing in space orbit ingalling by use of projector.本文介绍的瞬心迹演示仪可以在两种常见情况下,借助投影仪直观地显示本体极迹在空间极迹上作无滑动滚动的动态。
5)Instant Center and its Centrode瞬心和瞬心线
6)instantanous center deviation瞬心偏差
延伸阅读

瞬心  刚体或机构中的构件作平面运动时的瞬时回转中心。其中瞬时速度为零的,称为绝对瞬心;当一刚体对另一刚体作相对平行平面运动时,其瞬时相对速度为零,瞬时绝对速度相同的重合点称为相对瞬心。因此,绝对瞬心也可看作是运动刚体相对于固定刚体的相对瞬心。相对瞬心和绝对瞬心都指速度瞬心,瞬心是速度瞬心的简称。当机构的构件较少时,用瞬心来分析机构的速度比较简单清楚。瞬时加速度为零的点称为加速度瞬心。    瞬心的求法  平面机构中任意两个构件有一个瞬心(图1)。转动副的瞬心在相对转动中心。移动副的瞬心在相对移动垂直方向的无限远处。纯滚动高副机构的瞬心在两构件的接触点。带滑动高副机构的瞬心在过两构件接触点的公法线上,其具体位置可由三心定理求得:在平行平面中作确定相对运动的3个构件共有3个相对瞬心,它们都位于同一直线上。用观察方法不能求得的其他瞬心也只能用三心定理来求取。利用瞬心是两构件速度相同的重合点这一概念可得出:两构件 1、2的传动比,与其被轮廓接触点的公法线所分割的连心线的两线段长度成反比,即ω1/ω2=P12O2/P12O1。瞬心求法不适用于较复杂的机构,对某些机构要求出其全部瞬心也比较困难。    瞬心线和瞬心线机构  两个作确定相对运动的构件在每一瞬时都有一个瞬心,分别将这两个构件上所有作过瞬心的各点连成曲线即得到两条瞬心线。将这两条瞬心线作成相互滚动的轮廓线以传递运动的机构,称为瞬心线机构。这种机构能重演这两个构件的确定相对运动。例如带滑动高副机构,其构件1、2的两条轮廓曲线接触点在传动过程中存在滑动,故它们是一对共轭曲线。求出其在不同接触位置的瞬心P12,就不难求得与这对共轭曲线相应的一对瞬心线。用这对瞬心线作轮廓线的机构,可以代替相应的共轭曲线机构。如果P12在连心线上的位置不变,则构件1、2的传动比为常数,而瞬心线也就成为两段圆弧。若两条相互滚动的瞬心线为两个椭圆,就成为椭圆瞬心线机构(图2)。