He has made scientific researches on atom for ten years.
他从事原子科学研究已十年。
Researchers usethese X-ray flashes to resolve structures as small as one ten billionth of ameter (0.1 nanometer) in size. That is roughly the diameter of a hydrogen atom.
【译】研究人员用X射线光来分辨尺寸为百亿分之一米（即0.1纳米）的微小结构，这种尺寸结构接近氢原子直径。
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