在某个地方的完美球型壳层,厚度，我们把它叫做4πr平方，我们仅仅是把它,乘以概率密度。

a perfectly spherical shell dr at some distance, thickness, d r, dr we talk about it as 4 pi r squared d r, so we just multiply that by the probability density.

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为了达到既定的冰层深度，科学家们设计并建造了增强型热水钻(Enhanced Hot Water Drill)，这种设备可以在不到两天的时间里穿透厚度超过两公里的冰层。

To reach the icy depths, scientists designed and built the Enhanced Hot Water Drill, which can penetrate more than 1.2 miles (2 kilometers) of ice in less than two days.

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在部分耗尽型SOI结构中，SOI中顶层硅层的厚度为50-90nm，因此沟道下方的硅层中仅有部分被耗尽层占据，由此可导致电荷在耗尽层以下的电中性区域中累积，造成所谓的浮体效应。

In partially depleted SOI, the top layer is between 50- to 90-nm thick. Silicon under the channel is partially depleted of mobile charge.

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