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The eighty-three kilogram satellite, called Sputnik, had two radios that sent signals as it circled the world.
VOA: special.2009.06.10
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Occasionally, you'll find you need to cancel out units, because, of course, you're always doing unit analysis as you solve your problems, and sometimes you'll need to convert joules to kilogram meters square per second squared.
偶然地，你会发现需要消除单位，因为在解题时,经常要做单位分析，所以有时候需要把,焦耳换做,一千克乘以米的平方除以秒的平方。
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But in spite of your best effort, you fail to lose a single kilogram.
但是即便你这么努力，你还是一斤肉都没减下来。
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So it died in space. A few months later, the Soviet Union put a one thousand three hundred sixty kilogram satellite into space.
VOA: special.2009.06.10
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Likewise for mass, we will take a chunk of some material and we will call it a kilogram.
质量也是这样,我们找来一大块材料,然后称它为 1 千克
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Old TVs can contain over a kilogram of lead as well as cadmium -- both highly poisonous.
VOA: special.2010.11.01
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A kilocalorie, and this is really what we--when people talk about calories, how many calories in food, it's really kilocalories that they're referring to, but that would be the energy required to raise a kilogram of water one degree centigrade.
一千卡,是人们讨论卡路时是真正用的单位,当提起食物中的热量,人们指的是多少千卡,一千卡,是将一千克水提升1℃所需要的热量
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A BTU is the amount of heat energy needed to raise the temperature of about one-half kilogram of a substance by one degree Fahrenheit.
VOA: special.2010.11.23
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A joule is a kilogram meter squared per second squared.
一个焦耳等于,一千克乘以米的平方除以秒的平方。
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Genetics may play a part. Researchers say Indians store more body fat per kilogram than Europeans.
VOA: special.2010.05.12
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I'm going to give you a glass case and in the glass case is an entity with this as one kilogram, by definition.
我给你一个玻璃箱,箱子里放的东西刚好是 1 千克,这是根据定义的
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Fisheries can earn a lot of money for even one kilogram of shark fins.
VOA: special.2009.06.16
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If I pull the one kilogram mass and I let it go, it does something, some acceleration.
如果我拉 1 千克重的物体并松手,就会获得一个加速度
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Refining companies pay more than ten dollars a kilogram for computer boards.
VOA: special.2010.11.01
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Now, I tie this one kilogram mass to it and let it go.
现在,我把这个 1 千克重的物体系上,并松开手
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It will include a three hundred kilogram tank of liquid xenon.
VOA: special.2009.07.21
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The point is, the one kilogram is a matter of convention.
关键在于,1 千克已经定下来了
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Each 23 kilogram bag of oysters he receives has a tag that marks the area it came from.
VOA: standard.2010.05.08
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But this is the acceleration of the one kilogram mass.
但这是 1 千克物体具有的加速度
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It does not have a mechanical keyboard and weighs less than one kilogram.
VOA: standard.2010.04.03
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You hook one end of the spring to a wall and you pull it from rest by some amount and you attach the one kilogram mass to it.
你把弹簧的一端固定在墙上,然后拉伸一段距离,接着你把 1 千克物体固定在上面
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Just days ago,a 50 kilogram car bomb injured more than 40 people.
VOA: standard.2009.08.31
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We can be precise about how much bigger by saying, "If the acceleration of a body to a given force is ten times that of a one kilogram mass, then this mass is one-tenth of one kilogram."
我们能精确地知道质量能大多少,只需要说,"如果物体在给定力作用下的加速度,是一个 1 千克物体的加速度的 10 倍,那这个物体的质量就是 1 千克的十分之一"
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If you knew this was one kilogram, then the acceleration of the elephant, which will be some tiny number, maybe 100th of what this guy did; the mass of the elephant is then 100 kilograms.
如果已知这个物体的质量为 1 千克,那大象的加速度,会是一个比较小的数,可能是物体加速度的 1 / 100,大象的质量就是 100 千克
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So, when I divide these two numbers, I'm going to find a1 over aE is equal to mE over m, which is the one kilogram mass.
把这两个式子相除,就会发现 a1 比 aE 等于 mE 比 m,m 等于 1 千克
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So, the way to measure force is in kilogram meters per second squared.
所以,力的单位是千克米每秒平方
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That kilogram, I don't expect you to deduce.
那 1 千克,我没指望你们能推导出来
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