In the Standard Model , the fine structure constant is immutable throughout eternity.

在粒子物理的标准模型中, 精细结构常数是永远不变的.

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This article introduces the origin of fine - structure constant, and discusses its physical significance, and theoretical calculation.

本文介绍原子物理学中重要的无量纲常数之一的精细结构常数的由来, 讨论它的物理意义和理论计算.

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