宇宙基本常数，比如电磁力强度之类的精细结构常数，符号位“ alpha ”，它们因为被假定为不变量而得名。

Fundamental constants such as the strength of the electromagnetic force - the so-called fine-structure constant, or alpha - get their name from the fact that they are supposedly the same everywhere.

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在气候资料中冷暖是随时间尺度而变化的，但也存在不变量。

The climatic colding and warming change with time scale, but there is also invariance.

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