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The same nations and the short life expectancy of birth probably the lowest quality of life in other areas.
这一数字在下降，在上述国家,新生儿预期寿命较短，某些区域生活质量极低。
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unless it has really good quality or I think it's going to last me for a really long time.
除非它真的质量很好，或者我认为我真的会用很久。
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Now, gravity, well force, is equal to mass times acceleration, g and the acceleration due to gravity is g.
是重力，等于质量乘以加速度，由重力导致的加速度是。
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So, if you want to attack urban air quality, this is probably moving in the wrong direction, OK?
所以如果你想攻击都市的空气质量，这可能是一个错误的方向，对吗？
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We wanted to quickly catch up and surpass everyone in terms of search quality for Chinese users.
希望能够通过该项目在为中国网民,提供搜索的质量，迅速赶超别人。
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at least as much a distinguishing feature between good venture capitalists among each other as the quality of their ideas.
这至少和创意质量一样,是区别优秀风险投资者,的重要特征之一。
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So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.
所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大
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And that's really neat to think about, because photons, of course, are massless particles, they have no mass, so it's neat to think about something that has no mass, but that actually does have a momentum.
而且那真的不容易想明白，因为光子，当然是无质量的粒子，它们没有质量，所以这个真的不容易想明白,一些物体没有质量，但是它们事实上确实有动量。
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Looking at opportunities for how we might improve education Building the things that will help students And then putting them to classroom settings.
研究我们如何能,提高教育质量,建立能帮助学生的东西,然后把它们放到课堂中应用。
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And so ease of implementation is actually a very compelling -- metric against which to measure-- -- do you mind toning my voice down a bit-- is a very reasonable measure against which to measure the quality of an algorithm, right.
如此简单的实现实际上是一个很牵强的,度量，与之相对的衡量是-,如果你们不介意，我降低点音量-,是一种用来度量算法质量的,合理的方法。
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in terms of quality. I know, for instance, that I wanted to go to see an exhibit last April,
就质量而言。例如，去年四月我想去看展览，
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Maybe you want to learn how to study better, improve your sex life, interpret your dreams, and win friends and influence people.
也许你想学会如何更好地学习,想提升你的性生活质量,想为自己释梦,想多交点交朋友,想学会如何影响他人
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Listen, I have seen this person's work in these eight context and it's all been great. You know.
他说，我曾经见过这个人在八种环境下工作，而且工作质量都很高。
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But I do agree with spending a little bit of extra money for something that's a higher quality.
但是，我同意多花一点钱去买一些高质量的东西，
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You can see the atomic mass unit will be, excuse me. Let me go at it a different way.
你可以看到原子质量单位就是，不好意思，我们换个方式说。
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And so we know the force for a particular mass, and we know the area of the piston.
我们知道每个质量对应的力，也知道活塞的面积。
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If the atom is fixed mass, the electron is tiny, It must be the positives have all the mass.
如果是原子质量一定，电子很小，带正电荷的部分几乎占据了全部质量。
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And in terms of equations that we use, it's sometimes easier to plug in the fact, since momentum is equal to mass times velocity.
在我们使用方程这方面，事实上有时是很容易代入的，因为动量等于质量乘以速度。
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Therefore, when you divide by the mass to get the acceleration, the response of different bodies is inverse to the mass.
因此,当你拿力除以质量得到加速度时,不同物体的加速度与质量成反比
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So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.
好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。
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It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.
双纵栏，你们看到，从氢开始,然后到水银，按原子质量的升序排列。
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He could divide all of that by the absolute value of the charge of the positive particle, all over the mass of the positive particle.
他可以把这整个,除以正电粒子的,电荷绝对值除以，正电粒子的质量。
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So, let's say we're talking about the baseball, have a wavelength of the baseball that's on the order of the baseball.
克服质量的效应，比如说以棒球为例,要棒球的波长有它尺寸数量级的波长。
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If a photon which has no mass can behave as a particle, does it follow then an electron which has mass can behave as a wave? 1920.
如果一个没有质量的光子,能像粒子一样运动，那么它能像一个,没有质量的电子那样以波的形式运动吗。
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We know now with the same spring, by this comparison, we will find all objects now can be attributed a mass.
我们现在知道利用相同的弹簧,采用这种比较的方法,就会发现,所有物体都有确定的质量
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One is inertial mass, which is how much you hate your velocity to change, how hard you resist acceleration.
一个是惯性质量,它反映了物体速度改变的难易程度,即保持加速度的难易程度
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With some degree of confidence, I'm working with a reliable spring and then I will get the mass of the elephant.
这时我就对弹簧有信心了,我用的是一个可靠的弹簧,我能测出大象的质量
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But the acceleration it produces on the elephant and on the mass, are in an inverse ratio of their masses.
但这个力使大象和物体产生的加速度,与它们的质量成反比
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You put the standard mass here and you put some other fellow at the mass you're looking at there.
把标准质量放在这里,然后把待测物体放在这里
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system is the opposite of the open system, no mass and no energy can flow through the boundary.
孤立系与开系正相反，没有质量或能量,能流过它的边界。
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