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And in practical terms, we can define the efficiency as the ratio of the heat in to the work out.
在实际中，我们定义,效率为热与功的比值。
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The history of mortgages is that they have generally over time gotten more easy on loan-to-value ratio and also on maturity.
从抵押贷款的历史来看,随着时间推移,抵押贷款,对于贷款价值比和期限越来越宽松
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So there is more even playing field instead of the 21:1 ratio, we are doing much more, focusing on the positive.
比起21比1的比率，两方更均衡，我们做得更多，除了专注于积极的一面。
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So, if every tenth time your dog brought you the newspaper you gave it hugs and treats; that's ratio.
每当你的狗为你拿十次报纸,你就抱抱它，给它奖励;,这便是比率强化。
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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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It is about 10,000 to one, the ratio 10000 of the nuclear dimension to the entire atomic dimension.
原子核和整个原子的大小比例,约为1：
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And b, they have what's called a low expense ratio since they're easy to implement, you don't pay anyone to be brilliant to implement if for you.
但是他们的费用比率很低,因为这种做法很容易，你不需要,有多聪明就能去实施。
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If you transfer this ratio to a city like New York City, with 8 million people.
我们不妨用纽约这座,拥有八百万人口的城市来诠释这个比例。
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And it has to do with climate, it has to do with sex ratio--male to female it has to do with diet, and it has to do with movement.
它与风气有关,也与性别比例有关,男性相对于女性的人数,还与饮食有关,与迁移有关
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So that's a very wide sort of ratio there.
我们能得到许许多多不同比值的重复。
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That ratio may have been higher in the nineteenth century; it's gradually trending down, but it's a slow-moving thing.
在19世纪这个比率要高一些,然后逐渐下降,但这是个缓慢变化的过程
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And this has, just like a lot of positive psychological approaches, has been ignored with a ratio 21 to 1.
正像很多积极心理方法一样，被21比1的比率忽视。
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But if the loan to value ratio is greater than one, they won't be able to get all the money back.
但如果贷款价值比率大于1,他们就不能追回所有的贷款
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That is why we don't worry about the motion of the nucleus 1 because the ratio of mass is about 2,000 to one.
这就解释了为什么我们不担心,原子核运动起来,因为原子核和电子的质量比约为2000：
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And so, there is the distinction between fixed schedules versus ratios, variable schedules and ratio versus interval.
因此，在固定时程与变化时程之间,以及在比率与间隔之间，存在着一些区别。
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Change the independent variable, find the change in the function, take the ratio and that's the derivative.
改变自变量,算出函数的变量,计算比值,这就是求导
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The difference between ratio is a reward every certain number of times somebody does something.
比率强化意思是,间隔一定比例才给予奖励。
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And since we are not expecting the mass of the particle to change, what we really are saying is the uncertainty in its velocity times the uncertainty in its position is greater than the ratio of the Planck constant divided by 2 pi.
因为我们不期望,粒子质量发生变化，我们说的是,它速度的不确定度,乘以它位置的不确定度,比普朗克常量,除以2除以圆周率要大。
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All tended to have a high slave-to-free ratio of population.
人口中奴隶所占的比例 都是非常高的
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So, they had the ratio of two to one, which gave them the octave, and three to two, which gave them the fifth, and four to three, which gave them the fourth.
他们发现,八度音程中,呈现的是二比一的比例,而五度音程中呈现三比二的比例,在四度音程中则呈现四比三的比例
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the ratio will approach a definite limit.
比值会接近一个确定的极限值
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What's happening and interests me acoustically, and again we'll come back to it, is that we're getting up toward here, and notice how these pitches in terms of the ratio frequencies are getting very close together.
这段乐曲从声学的角度上让我很感兴趣,我们再看看它,音乐升高到这里,然后我们注意到这些音高,是如何根据频率比最后汇合在一起的
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The reason why we need positive psychology is to shift the pendulum from the 21:1 ratio that we have today: for every one study on depression or anxiety, we have 21 studies on-- sorry, for one study on happiness or wellbeing, we have 21 studies on depression and anxiety.
我们需要积极心理学是为了改变,现在的21比1这个比率：,每有一项关于抑郁或焦虑的研究，就有21项，对不起，应该是每有一项关于快乐或幸福的研究，就有21项关于抑郁或焦虑的研究。
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We had a similar, even higher price-to-earnings ratio of about forty-six at the peak in 2000 and it corrected way down.
000年时我们的市盈率甚至更高,达到了46,后来经过修正降低了
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That would mean that companies should try to push their debt-equity ratio up as high as possible given that theory.
这个理论意味这公司将,尽力提高负债权益比
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The loan-to-value ratio--well it's not so much the loan--the maturity was short and the balloon payment at the end that they changed.
贷款价值比率,不,就是期限太短了,期末大额偿还也是罪魁祸首
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