Just I would have to sum the square of a distance to the axis of rotation. 只要计算到旋转轴距离的平方的总和。
A slow westward shift of the equinoxes along the plane of the ecliptic caused by precession of the Earth's axis of rotation. 随着地轴的转动昼夜平分线沿黄道平面向西缓慢移动的过程。
And if the axis of rotation doesn't coincide with the line through the two hot spots, if the neutron star rotates, you're going to see x-ray pulsations. 不合这两点之间的线,相一致,如果中子星旋转,你会看到x射线脉动,当热点在这里。
1/ 2I So this can also be written as one-half I, C I put a C there you will see shortly why, because the moment of inertia depends upon which axis of rotation I choose times omega squared. 它也可以被写成,这里我写上,你们马上会发现原因,那就是转动惯量,取决于我选择,哪一个转动轴,乘以ω的平方。
When measured at the surface, the dominant structure of this field is called the dipole, which most of the time is roughly aligned with the earth's axis of rotation. 在地表进行测量时,这个磁场最显著的结构是偶极,多数时候与地球自转轴大致平行。
An Estimation Algorithm of the Axis of Rotation from 3D Cloud Data Based on Line Element 基于线元几何的旋转面点云数据旋转轴提取算法
This paper presents a new method for an estimation of the axis of rotation based on line element geometry and kine-matic equation. 提出了一种基于线元几何与运动方程的旋转体点云数据特征分离与旋转轴提取算法。
For the moment of inertia, we want the square of a distance to the axis of rotation. 至于转动惯量,要求的其实是到旋转轴距离的平方。
Because the core current is somewhat symmetrical around the axis of rotation, the associated magnetic field is similar to that of a bar magnet. 因为地核流在旋转轴周围存在着一些对称,所以相关的磁场与棒磁铁的磁场相似。
More precisely curl v measures twice the angular velocity, or maybe I should say the angular velocity vector because it also includes the axis of rotation. 更精确地,curv,v值为角速度的2倍,或许我应该说,角速度向量,因为它带有旋转轴。
Concretely, this curl gives you the angular velocity of the rotation, well, with a factor two but that doesn't matter, and the axis of rotation, the direction of the axis of rotation. 它给出了这个旋转的角速率,有一个因子2,但没关系,给出了旋转轴,和旋转轴的方向。
Xuan Sefa a cone-shaped pieces of the hoist and around the center line perpendicular to the axis of rotation pipeline, completed the hoist valve action. 的启闭件呈锥形,并绕垂直于管道中心线的轴线旋转,完成阀门的启闭动作。
Taper support rib usually two or three cam roller contacts, in order to edge into the axis of rotation to be sent to the uniform output shaft. 锥度支撑肋通常与两个或三个凸轮滚子接触,以便入力轴的旋转可均匀地传送到出力轴。
Now, if you compute the curl of this guy, you will get zero, zero, two, two k.And so k is the axis of rotation, two is twice the angular velocity. 现在,如果你去计算它的旋度的话,得到,也就是2k,k是旋转轴,2是角速度的两倍。
A spherical roller bearing contains two rows of barrel rollers, their axes are inclined to the axis of rotation of the bearing. 球面滚子轴承包含两行辊筒,他们倾向于轴的轴承旋转轴。
You have a spinning wheel, but that spinning wheel is mounted in such a way that you cannot put a torque on the axis of rotation of the spinning wheel. 你们有一个旋转的轮子,但是,它安装的方式使你无法,使力于旋转的轮子,转动的轴心上。
In this article it analyzed and compared the power supply mode of temperature data acquisition of axis of rotation and the circuit of wireless send unit. 文中对旋转轴上温度数据采集及无线发射单元电路的供电方式进行了分析比较,利用环形变压器非接触为旋转体上的检测电路进行耦合供电,避免了电池供电的不便。
We present a new method for alignment optical axis and axis of rotation in laser direct writing system using reflection of plane grating. 提出一种光栅反射对准法:在极坐标激光直写系统中利用光栅反射聚焦光斑来校准光轴和工件台的转动轴;
Unbalance means the non-uniform distribution of the mass of a rotor about its axis of rotation. 不平衡是指转子相对于其旋转轴质量分布不均匀。
This paper analyses the effects on the critical speed of the axis of rotation from the gyroscopic action under the circumstance that an axle with a circular disc is in a high-speed operation. 本文分析具有圆盘的轴在高速运转的情况下,陀螺效应对其临界转速的影响。提出了计入陀螺效应时,计算临界转速的方法。
Disturbances to a Rotating Fluid with a Sphere Moving along the Axis of Rotation 旋转流体中圆球沿旋转轴运动产生的扰动
An approach of adding a axis of rotation to wire cut electric discharge digital control machine tool and how to use this new machine is discussed in this paper. 介绍了对数控线切割机床增加一个回转轴的改造方法,及如何利用新增加的回转轴来进行加工;
An analysis is given to the effect of centering error of the mechanical mounting of the master ball in a digital measurement upon the radial motion polar plot of an axis of rotation. 本文主要分析采用数字式测量时,标准测试球的安装偏心对回转轴径向误差运动圆图象的影响。
The measurement concerning the radial motion of an axis of rotation is one of among the key items of measurement in mechanical engineering. 回转轴径向误差运动的测量是机械工程测量中的重要项目之一。
Turn the plane grating the spot will scan the grating and shape a round trace because of alignment error between optical axis and axis of rotation. 当聚焦透镜的光轴和工件台的转动轴存在对准误差时,如果转动光栅,激光光斑将在光栅上扫描出一个圆形轨迹。
A Dynamic Balancing Method for Determining the Axis of Rotation of Spinning Spacecraft 确定自旋航天器旋转轴的动平衡方法
Projection angle sort scheme is used to the helical trajectory and circular arc changing axis of rotation trajectory and good results also are reconstructed. ( 2) The correlation between ray-projections leads to the reduction of amount of the statistics information that the subset contains. 将投影视角排序方案推广应用到螺旋轨迹和变旋转轴圆弧轨迹上,取得了较好的重建结果。(2)射线投影存在相关性导致子集内包含统计信息量有所减少。
Use the principle of axis of rotation to calculate the conical cutter axis vector. 通过绕空间轴旋转原理计算锥形刀刀轴矢量。
The concentrated load is applied by changing the axis of rotation of the frame and fork to MPC multipoint restriction. 运用MPC多点约束方式代替了车架和平叉转动轴,并用这种方式对有限元模型施加集中载荷。
According to the results of finite element analysis, optimization design for the vacuum container, gets the optimum scheme of the container; Fatigue life analysis for the axis of rotation, gets the fatigue life and load sensitivity curve. 根据有限元分析结果,对真空箱体进行优化设计,得出箱体的最优设计方案;对转动轴进行疲劳寿命分析,得出转动轴的疲劳寿命以及其对载荷的敏感性曲线。