双语例句原声例句
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用20除以132000，但现在背散射，的概率是被散射回来的小球，除以总的小球数，你们记得。
But in our case, the probability of backscattering is going to be the number of balls that backscatter, and that's going to be divided by the total number of ping-pong balls.
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你们有我们称为总横截面的,那是散射或者吸收的总概率,这些是我们要谈论的,2个现象。
You have what we call a total cross section which is the total probabilities of either scattering or absorption. These are the two phenomenon that we are talking about.
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实验结果表明，这种方法不仅可以估计出散射元的平均间距，而且还能估计出散射元的空间分布及概率分布。
The experimental results show that this new method can be used to estimations of spatial distribution and the probability distribution of scatterers .
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So, once we figure out what our probability of backscattering is, we'll just raise that to the 1/2, and we'll multiply that by 12 . 20 centimeters.
所以一旦我们,知道了散射概率，我们开根号。
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Raise your hand if you don't if you don't have a ping-pong ball yet.
这样就可以算,背散射的概率了。
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But in our case, the probability of backscattering is going to be the number of balls that backscatter, and that's going to be divided by the total number of ping-pong balls.
用20除以132000，但现在背散射,的概率是被散射回来的小球，除以总的小球数,你们记得。
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