Fundamental physical constants By the US National Institute of Standards and Technology.

物理基础常数，由美国国家标准和技术会提供。

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At the same time, the practice shows that the accuracy of fundamental si units could be improved further by redefinition of some fundamental physical constants.

同时，实践证明，用固定若干基本物理常数的数值来重新定义基本单位，可以进一步提高基本单位的准确性。

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But for the moment, the examples discovered in Gabon remain unique Windows on possible changes in fundamental physical constants and on how buried nuclear waste migrates over time.

不过现阶段而言，要研究基础物理常数可能的变化以及埋藏的核废料如何随时间迁移，加彭的例子仍是我们唯一的窗口。

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