This paper describes a mechanical method for preparation of depth profile of a sample.

本文介绍制备样品深度剖面的一种机械方法。

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Despite this low profile, but the Gates Foundation in-depth China has for many years.

尽管如此低调，但盖茨基金会深入中国已经多年。

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Despite this low profile, but the Gates Foundation in-depth China has for many years.

尽管如此低调，但盖茨基金会深入中国已经多年。

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