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Other anti-counterfeit efforts include the use of radio frequency identification tags.
VOA: special.2010.03.01
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So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.
如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。
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So really what we'll probably do is instead either give you the wavelength or the frequency and you'll go ahead and calculate the energy from there.
所以实际上我们可能的做法是,给你波长或者频率,然后你可以通过他们计算得到能量。
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AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.
VOA: special.2010.12.08
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Maybe you can put the frequency of the higher pitches as high so you can detect the sound quicker and That's it exactly.
大概是把频率调到更高的音高后,就能更敏捷地感觉到声音的变化,而那就是原因了
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He says global warming is likely to increase the intensity and frequency of extreme weather events.
VOA: standard.2009.08.30
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I have some people, as soon as they see it, oh, they have the frequency here.
有那么一些人，他们很快就能看出来，哦，它们这儿有频率。
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They will be decreasing in size and frequency, but at this point they're still large enough to be of concern in hampering the rescue efforts."
VOA: standard.2010.01.13
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And you check the frequency and then inferences are made about your overall intake from that.
核对频率,然后根据你的总摄入量,得出结论
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The experts say you will see that with much increased frequency over time."
VOA: standard.2009.12.12
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It's related to the frequency with which you go around the circle Why is that?
它也跟圆周运动的频率有关,为什么呢
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The strikes have increased in frequency in recent months.
VOA: standard.2009.05.12
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Another way to increase intensity is the frequency of firing.
另一种会增加反应强度的因素,就是神经冲动产生的频率
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"If there is any truth to that, can you imagine the impact on hunger, on acute and chronic malnutrition?" Scientists say the warming of the planet will be gradual, but that extreme weather events will increase in frequency and intensity.
VOA: standard.2010.01.02
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The World Health Organization keeps track of what countries have cases of polio and when they occur, and what the frequency of--So, this is a map from a few years ago and there are efforts that occur occasionally.
世界卫生组织一直跟踪记录,发生小儿麻痹症的国家及发病时间,以及发生的频率,那么,这是从几年前开始统计的,一个地图,这里是一些偶然产生的成就
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In the works that Milton is going to be publishing now with greater and greater frequency, it's this Spenserian ideal of marriage that will be the new and, believe me, the endlessly complex Miltonic subject.
在弥尔顿准备出版的作品中,越来越常出现的，是斯宾塞式的婚姻理想，那将是崭新的，相信我，也是无尽而复杂的弥尔顿风格的题材。
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Fire reappears with increasing frequency in the late poetry.
晚期诗里火出现更频繁。
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She and the Chevy seemed parked at the center of an odd religious instant, as if on some other frequency, or out of the eye of some whirlwind rotating too slow for her heated skin even to feel the centrifugal coolness of words were being spoken.
她和她的雪佛兰车，似乎停在了,一个宗教瞬间的中心，就像在其他的频率上，又像是离开了旋风的风眼,风转的如此之慢，以至于她灼热的皮肤,感觉不到言语带来的，离心般的寒冷。
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So, would it take, for example, the same amount of time as the frequency?
它需要，比如说,和频率一样的时间吗？
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Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.
好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。
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You're also free to write it in terms of the frequency.
你也可以用频率来表示
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So, for example, here we're showing rubidium and potassium and sodium plotted where we're plotting the frequency -- that's the frequency of that light that's coming into the metal versus the kinetic energy of the electron that's ejected from the surface of the metal.
让大家看来都是可以理解的事情,就是把不同金属的观测结果,画到一张图里面来，例如这里,我们展示的是钠，钾,铷的频率-这是照射金属的光的频率,和金属表面出射电子动能的关系。
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The second one is the frequency of firing in that something is more intense if it's "Bang, bang, bang, bang, bang, bang" then "Bang, bang, bang" and these are two ways through which neurons encode intensity.
第二个是产生神经冲动的频率,如果先是 "砰 砰 砰 砰 砰",然后变成,"砰,砰,砰",这是由于神经元反应强度更大了,这便是两种,会影响神经元反应强度的因素了
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What appears to the naked eye to be just glowing is actually superposition of different lines of distinct frequency. So, you see, this is quantized.
出现在肉眼面前的光亮,事实上是波段不同的光线的叠加,所以，它是量子化的。
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So this means that we can go directly from the energy between two levels to the frequency of the photon that's emitted when you go between those levels.
这意味着我们可以直接,从两个能级的能量得到它们之间,跃迁发射出光子的频率。
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So, one thing they did, because it was so easy to measure kinetic energy of electrons, is plot the frequency of the light against the kinetic energy of the electron that's coming off here. And in your notes and on these slides here, just for your reference, I'm just pointing out what's going to be predicted from classical physics.
他们做的其中一件事,因为测量电子动能是很容易的，就是画出光的频率,和出射电子动能之间的关系,在讲义的这里，仅仅是,为了做个比较，我要指出，经典物理所给出的预测,这个不作为对你们的要求。
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So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.
所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。
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And I use the term photon here, and that's because he also concluded that light must be made up of these energy packets, and each packet has that h, that Planck's constant's worth of energy in it, so that's why you have to multiply Planck's constant times the frequency.
我这里用光子这个词,是因为他还总结出光,必须由这些能量包组成，每个能量,包有这个h，普朗克常数代表,里面的能量，所以这就是为什么你们,要用普朗克常数乘以频率。
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The period, that's right. So, it's going to take one period to move that long. And another way 1 we can say period is just 1 over nu or 1 over the frequency So, now we know both the distance traveled and the time the elapsed.
还是？周期，对的,它需要一个周期的时间,另一种说法是周期是,除以nu，也就是1除以频率,现在我们同时知道了。
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If we have a high frequency, what about the wavelength, long or short? All right. Good. So we should always be able to keep these relationships in mind.
如果频率高，那波长是长还是短？,好，不错，我们要记住这些关系,类似的。
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