fundamental physical constants meaning in English

单位和变换因子
基本物理常数

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。
Primary standards may be primary realizations of the si units or agreed representations of the si units based on fundamental physical constants
基准可以是国际单位si的直接复现或根据基本物理常数表示。
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。