不论转速如何，发动机都可以立即加速。
地球引力减缓了月球的自转速度，使之与其轨道的速度相匹配。
The earth's gravity slows the moon's rotation, matching it to the speed of its orbit.
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。
Science offers no plausible explanation of how it could have slowed to its current rotational rate from that speed.
这台机器是如此精确，以至于人类的头发甚至不能从头部和旋转的磁盘之间穿过，但它的运转速度却是惊人的。
This machinery is so precise that a human hair couldn't even pass between the heads and spinning platters, yet it all works in terrific speeds.
转速计在时速70英里时显示每分钟高达3000转。
使用叶片式风速仪测量模拟气缸内的涡流转速。
The blade type anemograph is used to measure and simulate the turbulence speed.
假设转速衰减很少，那么阻力系数增加。
Assuming that the amount of spin had not decayed too much, then the drag coefficient increased.
一块设计来使伊朗的原子离心机转速失控。
One was designed to send Iran’s nuclear centrifuges spinning wildly out of control.
在地震中，地球质量移动得离赤道越近，地球转速就越快。
The closer the mass shift during an earthquake is to the equator, the more it will speed up the spinning earth.
但这种影响向外扩散，逐层改变地核的自转速度。
But the effect ripples outward, changing the core's rate of rotation layer by layer.
现在，月球的自转速度与绕地球公转速度是一样的。
Right now, the Moon's rotation rate, and the time it takes to orbit Earth are the same.
你能让预报函数基于物件的速度、操纵或者旋转速度。
You can base this prediction function on the speed of the object, steering or rotation speed.
内存空间不断扩大，运转速度不断加快，随之内存出现了问题。
With memory space expanding and the speed of microprocessor cores going ever faster, there was a problem of the memory keeping up.
但是，旋转速度不变的情况下增加球速会降低升力系数。
However, increasing the velocity at a given spin reduced the lift coefficient.
地球的旋转速度仍在减慢——我们一天的时间正越变越长。
Earth's rotation rate is still slowing down — our days are getting longer and longer.
科学家们通过增加小孔的活动，有效的提高了老鼠大脑的运转速度。
By increasing "pore" activity with the over-expressed NR2B gene, the scientists effectively increased processing speed of the rat's brain.
所以Meibom和他的同事们正在测量已知年龄的星星的自转速度。
So Meibom and his colleagues are measuring the rotation of stars whose ages they already know.
因此，我们可以用星星的自转速度及速率作为衡量它们年龄的计时器。
And so we can use the spin rate, the rotation rate of a star, as a clock to measure its age.
如果他们能够确定星星年龄与转速之间的关系，星星的年龄测起来就简单的多了。
If they can pin down the relationship between age and rotation, a star's age will be much easier to measure.
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.
我们看到进行核反应产生中微子的太阳核心的自转速度明显比太阳表面慢。
The core of the sun - where nuclear reactions produce neutrinos - apparently spins more slowly than the surface we see.
这样还把由于不必再为了控制引擎转速来抑制空气流入引起的抽吸效应的能耗最小化。
It also minimises the pumping losses caused by no longer having to "throttle" (ie, strangle) the air flowing into the cylinders in order to control the engine speed.
角动量的大小，取决于旋转中的滑冰选手的旋转速度、体重和绕旋转中心的质量分布。
The amount of angular momentum, say, a spinning skater has depends on both the speed of rotation, and the weight and distribution of mass around the center.
每秒几百公里的旋转速度可能使圆盘里的物质呈现象宇宙玩具风车一样独特的螺旋形。
This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a distinctive spiral shape like a cosmic pinwheel.
研究人员计算出这会怎样影响整个地球自转速度，这有助于保持角动量守恒。
The researchers calculated how this would affect the rotation rate of the whole planet, which would compensate to conserve angular momentum.
如果黑洞是依靠合并来成长的，在合并的过程中，他们的旋转速度很快就会变慢。
"If black holes grow by merging, by combinations of black holes, they should spin down quite quickly," Blandford explains.
我们没有意识到的是，事情是相互的，你越减缓机器的运转速度，它就响得越厉害。
And what we may not realize is that there's interaction, that the slower you run the machine at, the more it sputters.
要降低噪音，最简单的方法是增大旋翼桨叶的夹角，也叫“节距”，或是降低转速。
The simplest way to dampen a helicopter's noise is to increase the Angle of the rotor's blades, also called the pitch, and slow them down.
要降低噪音，最简单的方法是增大旋翼桨叶的夹角，也叫“节距”，或是降低转速。
The simplest way to dampen a helicopter's noise is to increase the Angle of the rotor's blades, also called the pitch, and slow them down.
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