Precession, basically is the change in the direction of earth's axis of rotation.
岁差，基本上是地球自转轴方向的改变。
The axis of rotation and its support are part of the central pedestal.
旋转轴和它的支撑结构是中央操作台的一部分。
A quaternion represents an axis of rotation and a rotation around that axis.
四元数表示一个旋转轴和一个围绕该轴的旋转。
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。
These tests are performed with the axis of rotation passing through the CG to minimise measurement errors.
这些试验都需要轴转动通过重心，以最大程度地减小测量误差。
The distance of the contour from its axis of rotation continuously varies through alternating maxima and minima.
这是自其旋转轴轮廓的距离不断变化，通过交替极值。
The craft discovered the 98 degree tilt of the axis of rotation, nine rings around Uranus and an extra ten moons.
工艺发现了旋转轴，九个天王星环98度倾斜和一个额外的10个卫星。
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。
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。
The Earth's axis of rotation is tilted in relation to the ecliptic plane, an imaginary surface through Earth's orbit around the sun.
地球的自转轴与黄道面呈一定角度。黄道面是地球公转轨道所在的一个假想平面。
The part of the azimuth adopts a revolving pedestal, the part of the pitching combines a photoelectric sensor and the axis of rotation.
方位部分采用转台式结构，俯仰部分把光电传感器与转动轴合二为一。
The invention relates to a mixer for mixing a liquid in a basin, comprising a first mixer element turnable around a first axis of rotation.
本发明提出一种用于混合在池盆中的液体的混合器，它包括可围绕第一转动轴线旋转的第一混合部件。
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。
Rationally define the work gear pump speed, gear and the axis of rotation to avoid engaging resonance frequency, can prevent noise intensified.
合理确定齿轮泵的工作转速，使齿轮与轴的转动避开啮合共振频率，可以防止噪声加剧。
The radial axis (R-R) traverses a radial line (x) that radially extends from a common axis of rotation (A-A) of the tire (12) and the wheel (14).
所述径向轴(R - R)横过从所述轮胎(12)和车轮(14)的共同的旋转轴(A - A)上径向伸出的径向线(X)。
Moment of inertia: turning around its axis of symmetry, object has the character keeping speed and the direction of the axis of rotation not changing.
转动惯性：物体在绕着自己的对称轴转动时，具有保持转速和转动轴方向不变的性质。
In one embodiment, the process reactor has four composite injectors arranged substantially parallel to the axis of rotation of the cylindrical susceptor.
在一个实施方式中，处理反应器具有基本上平行于圆柱形衬托器的旋转轴设置的四个复合注入器。
The inlet passage (28) leads to the impeller (34) and directs fluid flow substantially perpendicular with respect to an axis of rotation (38) of the impeller (34).
并且其中，该入口通道(28)通向该叶轮(34)并且引导流体基本上垂直于该叶轮(34)的一条旋转轴线(38)流动。
The component of apparent force on a body in curvilinear motion , as observed from that body, that is directed away from the center of curvature or axis of rotation.
在曲线运动中可明显由物体上观察到的力的组成部分，这种力使物体具有远离曲线中心或旋转轴心的方向。
The two different definitions of the axis of rotation are discussed. One is the definition of the CIRP text and the other is that of the instantaneous center of rotation.
评论了机床主轴转轴的两种不同定义，其一是CIRP统一文件的回转轴线定义，另一是瞬时回转中心线的定义，指出这两种定义均有不妥之处。
Centrifugal force: the component of apparent force on a body in curvilinear motion as observed from that body that is directed away from the center of curvature or axis of rotation.
离心力：在曲线运动中可明显由物体上观察到的力的组成部分，这种力使物体具有远离曲线中心或旋转轴心的趋向。
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。
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。
Butterfly valve is closed parts (valve flap or disc for disc), around the valve axis of rotation to achieve the open and close a valve, in the pipeline mainly as shut off and throttling effect.
蝶阀是指关闭件(阀瓣或蝶板)为圆盘，围绕阀轴旋转来达到开启与关闭的一种阀，在管道上主要起切断和节流作用。
The invention relates to a computer tomograph, in which data from a rotor, which during operation of the computer tomograph rotates about an axis of rotation, is transferred optoelectronically.
本发明涉及一种计算机断层摄影装置，其中来自转子的数据以光 电形式进行传输，在计算机断层摄影装置操作期间该转子绕转动轴转 动。
Vortex also called left turn, is the axis of rotation happened a self-excited vibration, it is neither has the free vibration characteristics, also do not belong to the type of forced vibration.
涡动又称甩转，是旋转轴发生的一种自激振动，它既不具有自由振动的特征，也不属受迫振动的类型。
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。
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。
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