Science offers no plausible explanation of how it could have slowed to its current rotational rate from that speed.
科学并没有给出合理的解释，说明它是如何从那个速度减速到现在的转速的。
Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.
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。
Finally, 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。
For an object to be in rotational equilibrium about a certain point, the total torque about this point must be zero.
一个物体若要在某一点处处于转动平衡，在这一点处的总力矩必须为零。
And that's a rotational degree of freedom.
那是一个旋转自由度。
There's also rotational disorder if it's a molecule.
如果是分子也会有旋转无序。
Even on a static medium, rotational symmetry can convey action.
即使在一个静态的介质中，转动对称也可以表达出动态的意味。
And you say, well, OK, let's think about their rotational motion.
然后你说，好，让我们来考虑它们的转动。
Eventually, our planetary rotational change will pretty much cease.
最终，我们星球的转动速度也会几近停止。
In art and design, rotational symmetry can be used to portray motion or speed.
在艺术和设计中，转动对称可以用来表达动作和速度。
I've got this little bit of advertisement here about our rotational program.
我想给我们的轮岗项目，做个小广告。
The average rotational latency is one-half of a revolution of the disk platter.
平均旋转等待时间指的是磁盘旋转一半的时间。
Earth's rotational tilt varies between 0.5 and 1 degree about every 100, 000 years.
地球的旋转倾角每10万年的变化在0.5到1度之间。
If I know the moment of inertia, then I know how much rotational kinetic energy there is.
若知道转动惯量我就能知道，转动动能是多少。
Geometry dictates that only two -, three -, four - and six-fold rotational symmetry can exist.
几何规定旋转对称只能以二次，三次，四次和六次存在。
Nor do the laws of nature change depending on the direction in which you look (rotational symmetry).
定律也不会因为你观察的方向不同而改变(这是转动对称性，Rotational Symmetry)。
To make this simple, we're going to assume that the rotational energies are the same for all the molecules.
为了让问题简单清晰一些，我们假设转动能量对于所有的分子,都一样。
That is impossible. Geometry dictates that only two-, three-, four- and sixfold rotational symmetry can exist.
然而几何学告诉我们，只有二次、三次、四次和六次的旋转对称是能够存在的形式。
One way to see this is to compare the energy of a nuclear blast to that of the rotational motion of the Earth.
有一种方法可以说清楚这个问题：即把核爆炸的能量与地球转动的能量作一次比较。
To pump energy back into the grid, some of the rotational energy is bled off to power a generator on the main shaft.
把电能又送回电网时，就释放一部分转动的动能，开动位于主轴的发电机。
Maybe the sun is spinning down, is slowing down and maybe the energy that we get is nothing but rotational kinetic energy.
也许太阳转速正减慢，也许我们得到的能量,不是别的，而是旋转动能。
Turns out that, in fact, the energy separation between rotational levels is very small compared to kT at room temperature.
事实上，转动能级的间距，相对于室温的kT是很小的。
He and his family have built a farm system of rotational grazing that is based on the biological patterns found in nature.
他和家人一起根据自然生态平衡建立起了牧草循环的农场体系。
Act returns a pair of velocities - translational and rotational (in that order) - that show the action it wants the motor to take.
act返回两个速度(依次为平移速度和旋转速度)，表示希望发动机执行的动作。
Each year, the Moon steals some of Earth's rotational energy, and USES it to propel itself about 3.8 centimeters higher in its orbit.
每年，月球都会偷取地球的部分转动能，让自己在运行轨道中的位置升高大约3.8厘米。
I will first discuss with you the sun and the earth and see how much rotational kinetic energy is stored in the earth and in the sun.
首先讨论太阳，然后是地球，看看地球和太阳中，具有多少旋转动能。
Traditionally, artificial knee-joints use hydraulic damping, which presents more angular resistance to fast rotational motion than to slow motion.
传统上，人工膝关节使用液压的阻尼，其特性是会对较快的旋转施予较大的阻力。
However, if you look at rotational kinetic energy, the situation is very different, because this neutron star rotates in 33 milliseconds about its axis.
然而，如果考虑旋转动能，情况就不同了，因为这个中子星，旋转一周是33毫秒。
It's all about rotational mechanics. When you turn your hands over you're rotating them around their centre point, which is near the middle of your palm.
这是一个力学常识，当你翻转手掌时，手掌是以掌心为中心旋转地。
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