它扁平的形状意味着土卫八曾经旋转得非常快，完成一次自转需要16个小时。
Its flattened shape implies that Iapetus once spun very quickly, completing a rotation in 16 hours.
由于地球的自转，赤道以北的飓风是逆时针旋转的，赤道以南则是顺时针。
Due to the earth's rotation, hurricanes spin counterclockwise north of the equator and clockwise south of it.
月球自转一周需29天，围绕地球旋转一周也同样需29天。
It takes 29 days for the moon to rotate around its axis, and it also takes 29 days for the moon to orbit around the Earth.
近地半球总是面对地球，远地半球总是远离地球，因为月球在绕地球旋转的同时，它也在以同样的速率绕自己的轴自转。
The near side is always facing Earth and the far side is always facing away, because the moon revolves around the Earth at the same rate that it rotates on its own axis.
曝光的天空被旋转着以补偿地球的自转，然后把一连串的图像叠放在一起，产生了与单一曝光相同的图像，可是很少有数码噪声。
The sky in the exposures was de-rotated to compensate for the rotation of Earth, then images were stacked together producing an image identical to a single exposure but with less digital noise.
并且它平坦的外形意味着其曾经旋转的很快，完成一个自转周期为16小时。
And its flattened shape implies that Iapetus once spun very quickly, completing a rotation in 16 hours.
地球自转，明显地倾斜于太阳，而月球不同，它几乎笔直地绕太阳旋转。
Unlike Earth, which rotates on a significant tilt to the Sun, the Moon is barely tilted at all.
由于地球自转速率发生偏离，因此当把地球绕中轴旋转一圈作为一个单位时，（这种偏离）就相当于一秒钟时间。
Since Earth’s rotation rate varies, so would the value of one second when it’s defined as a fraction of the time it takes for one spin of the Earth on its axis.
从这条曲线，记住这条曲线，So, from, that, curve—，因为接下来它会，很重要，从中你们推导出3样：，半径，自转周期，已经我旋转的，物体的速度。
And keep that with you, because it's going to be important in what follows we can derive three things: the radius, the period of rotation and the speed of the object as I twirl it around.
这还算顺利，并且提高了飞船的自转速率，从现在的一分钟旋转19.16增加到了原来的19.76。
That went off without a hitch, increasing the craft's rotation rate from 19.16 revolutions a minute to its original value of 19.76.
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).
环锤不仅能随转子旋转，还能绕锤销自转。
Ring hammer can not only with the rotor rotating, still can rotate around the hammer pin.
金星每225天围绕太阳旋转一周，而每244天围绕它的轴自转一周。
Venus revolves around the sun once every 225 days and rotates on its axis once every 244 days.
理查德·格罗斯：地球的自转是时刻改变的，时而加速，时而减速，在旋转的时候还会摆动。
Richard Gross: the Earth's rotation changes all the time. It speeds up and it slows down and it wobbles as it rotates.
虽然与直升机外观相似，但自转旋翼机必须依靠向上流过桨叶地气流维持旋翼地旋转，产生将飞行器维持在空中地升力以及向前飞行地推力。
While similar to a helicopter rotor in appearance, the autogyro's rotor must have air flowing up and through the rotor disk in order to generate rotation.
卫星在地球自转同时围绕着地球旋转。
The satellite turns around the earth simultaneously with the rotation of the earth itself.
卫星在绕地球旋转的同时缓慢地自转。
论述了凝汽器内水垢的形成和水垢对汽轮机运行的影响，介绍了自转塑料纽带的工作原理及热电企业运用塑料纽带自动旋转达到除垢防垢、强化传热、节能降耗，最后提出了应用建。
This paper discussed the formation of water scaling and the influence of water scaling in the operation of steam turbine; and introduced the principle of autorotation plastic twisted tapes.
旋转弹外弹道自转角速度的实时测量是弹道修正引信弹道解算器设计的重要环节之一。
The new method of measuring angular velocity of spinning projectile in exterior trajectory was proposed.
你作为小学生或中学生，肯定知道，地球自转并同时环绕太阳旋转。
As a pupil or student, you certainly know the earth revolves on its axis and at the same time moves around the sun.
地球在本身轴上旋转 [自转] 。
地球在本身轴上旋转 [自转] 。
地球在本身轴上旋转 [自转] 。
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