They store the energy mechanically by rotating mass around an axis.
它们通过质量绕轴旋转机械存储能量。
And suppose I'm rotating it about an axis perpendicular to the blackboard through that point.
假设我将其绕着，通过这点垂直于黑板，的轴旋转。
A large window facing north towards the courtyard consists of five separate doors, each rotating and connected on a central axis.
朝北的大型窗户面向院子，包括五个单独的门，每一个门通过中心轴旋转和连接。
An exercise that you can do, which is actually pretty easy to check, is say that we have a fluid that is just rotating about the X-axis uniformly.
可以做练习来检验一下的，实际上很简单，假定有围绕x轴一起旋转的流体。
Cock and ball: Turn off the prop is a plunger or a ball, rotating around its own axis.
旋塞和球形：关闭件是柱塞或球，围绕本身的中心线旋转。
Power reached the screw axis, Driven by the star wheel rotating screw.
动力传到螺杆轴上，由螺杆带动星轮旋转。
Having the shape of a spheroid generated by rotating an ellipse about its longer axis.
一种由一个椭圆围绕它的某个轴旋转而产生的形状。
Turn off the prop is a plunger or a ball, rotating around its own axis.
关闭件是柱塞或球，围绕本身的中心线旋转。
When the rotor is rotating around its axis, the centrifugal force is produced because of the uneven mass distribution with respect to the axis.
何转子在围绕其轴线旋转时，由于相对于轴线的质量分布不均匀而产生离心力。
As a application case of this diagnostic system, the fault diagnosis experiment of the rotating axis is simulated.
作为该诊断系统的一个应用实例，模拟了旋转主轴的故障诊断试验。
Circular disk was rotating about an axis tilted from the normal through the center.
圆盘绕一个通过中心与法线方向倾斜的轴转动。
By taking advantage of rotating centrifugal force and the supporting effect of eccentric short drill collar, we cut off the axis inclination of bit, and avoid well inclination.
利用偏心钻具在旋转过程中的离心力和偏心短钻铤的偏重带的支撑作用，减小了钻头轴线倾角，从而减少了井斜。
By rotating the symmetry axis of a target into a defined orientation, it is efficient for target recognition to use the feature area distribution as a parameter.
确定了物体对称轴的取向后，可使用坐标变换方法，将轴对称物体的对称轴旋转到某一特定的取向，便于使用特征面积分布作为特征参数进行快速的目标分类识。
It aims to realize the laser quenching and cladding for the principle axis and crank of single or more crank while the crankshaft is laid horizontally and rotating around the principal axis.
为实现在将曲轴水平放置绕主轴转动条件下，对单拐或多拐曲轴的主轴和曲柄轴进行激光淬火和激光熔覆，建立了激光作用于曲拐表面形成螺线时的光斑轨迹方程。
When the object is rotating or wiggling, the displacement of Moire fringe indicates the Angle of axis, and the stability of fringe indicates coincidence of the beam axis.
通过试件的旋转或摆动用条纹的移动来反映光束的倾斜，用条纹的稳定性来判断光轴的重合。
The method of tuning is rotating the wave-plate by the axial direction parallel to the optical axis.
调谐的方法是使石英波片绕平行于光轴的轴向转动。
The controls included collective, cyclic and differential pitch, the latter being obtained by rotating the stick handle which made the helicopter turn on its vertical axis.
这些控件包括集体，循环和差别音高，后者是通过旋转棒处理这使得在其垂直轴直升机又获得。
There are self-cleaning devices on the disk, scraping sludge attaching on rotating axis and casing through tray rotating.
盘上装有自清洗装置，通过让圆盘旋转来刮下附着在圆盘旋转轴和外壳上的污泥。
The changes of thickness and tilt Angle of patella are simulated by translating and rotating the patellar axis.
在伸膝力矩不变的条件下，通过改变髌骨轴线位置，模拟髌骨厚度和高度以及髌骨倾角的变化。
The rotating pendulum is a typical underactuated system with a rotating shaft of the motor attached to the end which is free to spin about an axis parallel to the axis of rotation of the pendulum.
旋转摆属于典型的欠驱动系统，通过驱动杆的水平转动可使欠驱动杆由垂直下摆位置转到竖直向上位置。
Computation of the magnetic field, which is produced by a charged body rotating about a fixed axis, is a classical question about magnetostatic boundary-value problem.
求定轴匀角速转动带电体的磁场是一类典型的静磁场边值问题。
Rotating the image according to the inertial principal axis can normalize it in position.
通过计算惯性主轴及图像旋转完成了位置归一化处理。
It can let the dressing tools turn around, influence of running around the rotating axis on the two moving axes wont be considered, thus the corresponding nc programming is easy.
而且它能使修整工具转动，可不考虑绕转动轴的转动对两移动轴的影响，故数控编程容易实现。
Planetary gears are mounted on the planetary frame and is rotating with the planetary frame while driving around his own axis.
行星轮安装在行星架上，在绕自身轴线传动的同时，也随行星架一齐转动。
A new 3-point error separation method is developed and used in this paper for separating the radial errors of rotating axis and the shape errors of the objects measured.
本文提出的三点式误差分离新方法用以分离旋转轴线的径向误差运动与测量介质或测量对象的形状误差。
Said base, said lever and said pressing part can be assembled together actively through springs, so said lever can be assembled on the base rotating around the pivotal axis supporting said springs.
所述基部、所述压紧部和所述杠杆借助于弹簧可活动地组装在一起，使得所述杠杆可绕着支撑所述弹簧的枢转轴可转动地装配在基部上。
One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.
如果我们用一个，经典的比喻来考虑它的话，这经常会帮助我们建立起一些概念，就是我们可以把电子的，自旋想象是它绕着轴自转。
The rotary inertia of an ellipsoid rotating around the symmetry axis is calculated by use of the divided calculation and the extensive spherical coordinate transformation.
用分步计算和广义球面坐标变换两种方法对椭球体绕对称轴旋转的转动惯量进行了计算，计算表明，后一种方法简单、实用，在工程实际中有应用价值。
The rotating system could be designed to realize work pieces only rotate along the center axis according to customer's requirement.
根据客户需要，旋转系统可设计为仅实现工件沿中心轴做圆周公转。
The rotating system could be designed to realize work pieces only rotate along the center axis according to customer's requirement.
根据客户需要，旋转系统可设计为仅实现工件沿中心轴做圆周公转。
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