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光速是一个不变常数。
The speed of light is an invariant constant .
youdao
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光速是一个不变常数。
The speed of light is an invariant constant.
youdao
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基本常数不变仅是一个假设。
The fundamental constants being constant is an assumption.
youdao
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基本常数不变仅是一个假设。
The fundamental constants being constant is an assumption.
youdao