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。
The apparatus includes a base defining a generally vertical axis of rotation.
该装置包括一个基地定义一个一般垂直轴的旋转。
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。
Closer to the poles means closer to the axis of rotation — like a skater drawing her arms in, this has increased our Earth's rotation.
离两极更近意味着离旋转轴更近——像一个溜冰者把手臂往回缩，这样加速了地球的旋转。
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。
The radius from the axis of rotation — - the axis of rotation is here — and the distance from here to here, though you may not think so, is about 15 meters.
半径是这个转动轴-，转动轴在这里-，距离从这里到这里，你们也许想不到，有15米。
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。
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。
When the axis of rotation, because of the imbalance in the quality of centrifugal force between the utility, will the initiation of buckling deformation.
当主光轴旋转时，因为失衡品质离心惯性力的效用，主光轴将萌生屈曲变型。
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。
Uranus isn't eccentric; its path is almost a perfect circle. Strangely though, Uranus' axis of rotation is almost parallel to the ecliptic plane. Uranus has 27 moons.
天王星是没有偏心，其路径几乎是一个完美的圆圈。很奇怪，旋转天王星的轴几乎平行于黄道面。天王星有27个卫星。
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。
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。
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