地球独特而巨大的卫星——月球，在稳定地球旋转轴的倾角方面发挥了关键作用。
Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.
最后，月球作为地球独特而巨大的卫星，在稳定地球旋转轴的倾角方面发挥了关键作用。
Finally, Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.
角度为正值，则表示若您顺着正旋转轴方向观察，对象是按顺时针旋转的。
Positive values for the angle rotate the object clockwise if you look along the positive rotation axis.
由于质量朝地球旋转轴靠拢，这就导致地球旋转速度加快- - -就像一个速度滑冰选手，当她把胳膊向身体收拢时就会旋转得更快。
Since that pulls mass closer to the planet's spin axis, it causes the planet to rotate faster - just as an ice skater spins faster when she pulls her arms towards her body.
观察一个旋转轴与空气流动方向垂直的足球(见上图)。
Consider a ball that is spinning about an axis perpendicular to the flow of air across it (see left).
要知道软件升级到可以预测撞击的确切经纬度绝非易事，因为切斯利每次都要将地球自传，方向及旋转轴等因素考虑在内。
Upgrading it to give the exact latitude and longitude of the collision wasn’t simple work, since Chesley had to factor in the spin, orientation and rotational wobble of the Earth at each moment.
至于转动惯量，要求的其实是到旋转轴距离的平方。
For the moment of inertia, we want the square of a distance to the axis of rotation.
我今天措辞别致，转动惯量就是——，与质量不同，转动惯量的定义跟旋转轴有关，选定一个旋转轴。
I am using fancy words today. And the moment of inertia — the difference with a mass is that the moment of inertia is defined about some axis.You choose an axis.
天王星有一个，因为它的自转轴倾斜多磁尾，也是其磁场的旋转轴（约60度）。
Uranus has an odd magnetic tail because of the tilt of its rotational axis and also its magnetic field (about 60 deg from the rotational axis).
所以，我可能会增加一个旋转轴很快。
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。
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.
扫描机械装置包括支架和旋转轴，由一个步进电机驱动。
The scanning mechanical device, including a bracket and the rotation axis, driven by a stepper motor.
旋转轴和它的支撑结构是中央操作台的一部分。
The axis of rotation and its support are part of the central pedestal.
在这种轴流式涡轮机中，蒸汽总是沿主轴的旋转轴流动的，因此，叶片由主轴向外呈辐射状展开。
In this axial turbine, steam always flows along the axis of rotated axis, thus, all blades extend with the radiation shape along the axis outward.
那台机器由气缸、活塞、旋转轴、齿轮、轴承、螺栓、螺丝钉和不锈钢外壳组成。
The machine consists of cylinder, piston, rotary, shaft, gears, bearings, bolts, screws and stainless steel crusts.
你可以在不同的旋转轴的董事会，甚至数轮合并到一个把戏。
You can spin the board around many different axis, and even combine several rotations in to one trick.
圆柱度-描述了一个条件的旋转面，使所有的点面距离相等，一个共同的旋转轴。
Cylindricity - describes a condition of a surface of revolution in which all points of a surface are equidistant from a common axis.
机械构件中，联轴器可以用来实现相邻两根旋转轴的半永久性联接。
In machine construction, couplings are used to effect a semipermanent connection between adjacent rotating shafts.
磁流体密封技术是利用磁流体形态的无定形性和它对磁场的响应特性将其应用于旋转轴动密封的一种全新的密封技术。
Magnetic fluid sealing technology is a brand new sealing technology for rotating shaft dynamic seal by using amorphism of magnetic fluid and its response characteristics to magnetic field.
本文提出用永磁材料制作的永磁悬浮轴承作高速旋转轴的主要支承，轴流式超音涡转作回转轴的驱动动力源。
The paper proposes a new method of using the ultrasonic-speed turbine as a power sourse and using the magnetic suspension bearing as the main back-up bearing for the rotation axis.
机械密封是流体机械旋转轴密封的主要类型，使用量大面广。
Mechanic seals are widely used in fluid machines for their rotary shafts.
并且以旋转轴为例，对几种程度不同的不平衡状态进行了识别。
A rotating spindle was taken as an example and several states of unbalance with different severity were recognized by two methods.
编码式传感器应用于精密测量时，由于旋转轴的晃动可能引起传感器输出波形的抖动，从而导致计数错误。
When using encoder sensor in precise measurement, the shaking of rotation axis can cause change of output waveform of sensor and wrong count.
旋转面重建的关键是确定旋转轴和母线。
The key point for re-constructing rotation surface is setting up rotation axis and generatrix.
无动密封点的旋转轴密封结构在实际应用中并不多见，无论从理论研究还是实际应用开发都是必要的。
In the actual, the rotate axis seal construction that has no dynamic leaking point is not much seen, and both study from the theories and application from actual are necessary.
根据旋转轴和轮廓线，提取碎片的几何特征；
We extract the geometry features according to the rotational axis and the profile.
提出一种对旋转轴扭矩测试的红外近程遥测法。
A method of infrared short range telemetry for torque measurement of rotating shaft is stated.
提出一种对旋转轴扭矩测试的红外近程遥测法。
A method of infrared short range telemetry for torque measurement of rotating shaft is stated.
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