现在我想知道这些的,旋转动能是多少。
Now I want to know how much kinetic energy of rotation these objects have.
旋转动能是，2亿焦耳，每个飞轮都是。
And that kinetic energy of rotation is, then, a whopping 200 million joules in each of those rotating flywheels.
最后对旋转动能也作了估计。
这个旋转动能，可以，转换为电力，或者其他形式的能量。
And this rotational kinetic energy can then be, perhaps, converted into electricity or in other forms of energy.
我准备给这飞轮，很多的旋转动能，一会儿你们就能看到。
I'm going to give this flywheel a lot of kinetic energy of rotation, and you will see shortly how I do that.
这样你也能,得到旋转动能,再次转化它,变成别的能量。
So you should also be able to get the rotational kinetic energy out and convert that again into forward motion.
它们运用这，旋转动能，来制造巨大的磁场，用时只有5秒。
Now, they use this rotational kinetic energy to create very strong magnetic fields on a time scale as short as five seconds.
吸积盘的旋转动能(通过磁场机制)转移给了喷流。
The rotational energy of the spinning accretion disk adds momentum to the outflowing jet.
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。
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.
排气涡轮将排出的能量转化为旋转动能，并以此驱动压缩机。
The exhaust turbine converts a part of its exhaust energy into rotational energy and drives the compressor.
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。
Maybe the sun is spinning down, is slowing down and maybe the energy that we get is nothing but rotational kinetic energy.
现在我们有一个计算，旋转动能的方法，如果我们知道，怎样计算转动惯量。
So we now have a way of calculating the kinetic energy of rotation provided that we know how to calculate the moment of inertia.
十亿年以后，你们就已经消耗完,所有的旋转动能,然后地球就不会再旋转。
then, you would have consumed up all the rotational kinetic energy and then the earth would no longer be rotating.
不用说，这巨大的，旋转动能，肯定储藏在行星中，我要多花些时间，来讲这个。
Needless to say that huge amount of rotational kinetic energy must be stored in planets and in stars, and I would like to spend quite some time on that.
绿灯亮起之时，将其转换回来，将旋转动能，转化为直线动能，你又再往前行进。
And when the traffic light turns green, you convert it back rotational kinetic energy into linear kinetic energy and you keep going again.
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。
However, if you look at rotational kinetic energy, the situation is very different, because this neutron star rotates in 33 milliseconds about its axis.
毫无疑问，在这个，旋转中子星的例子里，所有辐射的能量，都是以旋转动能，为代价。
So there's no question that in the case of this rotating neutron star, all the energy that it radiates is at the expense of rotational kinetic energy.
太阳的旋转周期是，26天，地球是一天，最后把一切转化成，米千克秒的单位，得到旋转动能的数据。
Well, the sun rotates about its axis in 26 days, the earth in one day, and so I finally convert everything to MKS units and I find these Numbers for the rotational kinetic energy.
共同旋转圈的作用，像个可以反射或透射这些波的介面，让它们转换星系整体的转动动能为自身的能量。
The corotation circle ACTS as an interface that can either reflect or transmit these waves allowing them to gain energy at the expense of the global rotational kinetic energy of the galaxy.
共同旋转圈的作用，像个可以反射或透射这些波的介面，让它们转换星系整体的转动动能为自身的能量。
The corotation circle ACTS as an interface that can either reflect or transmit these waves allowing them to gain energy at the expense of the global rotational kinetic energy of the galaxy.
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