constant quantity的用法和樣例：
例句
用作名詞 (n.)
- Strangeness is assumed to be a conserved quantity in all interactions that are not weak.
假定奇異性是除弱相互作用以外的所有相互作用中的一個守恆量。 - If only conservation forces act, the kinetic energy plus the potential energy remains constant.
如果只受保守力的作用，則動能加勢能是一個恆量。 - The speed of light is an important constant.
光速是一個重要的常數。 - The beam has a constant flexural rigidity.
該梁具有常數彎曲剛度。
