在爆炸发生后约40秒冲击波才到达我这里。
About 40 seconds after the explosion the air blast reached me.
在这个特殊的日子,在两小时,我花了在岩石上,这一波才出现一次。
On this particular day, over the two hours I spent on the rocks, this wave only appeared once.
我们指出只有在激发比较弱时,这组方程才可近似为一组线性方程,电子空穴极化波才可以看作玻色场。
We point out that the equation can be approximated by a set of linear ones and the exciton polarization wave can be regarded as a Bose field only in the limit of low excitation.
But for now let's simply say that we have a diffraction which we know occurs only by wave-like behavior and it involves the use of x-rays. Why x-rays?
但现在让我们来简单假设一下,我们知道,只波才发生衍射,而且衍射涉及了X光的使用,为什么是X光?
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