物理比例常数，是物理定理、物理定律公式中一个最常见的常数。

Proportional constant of physics is a common constant of physical theorem and physical law.

youdao

物理比例常数，是物理定理、物理定律公式中一个最常见的常数。

Proportional constant of physics is a common constant of physical theorem and physical law.

youdao