指描述一个储能元件、谐振电路储量和耗量关系的物理量，是无功功率的绝对值和有功功率之间的比值Q factor

• 研讨会上他提出了测定中、小地震介质品质因数的实用方法。

  At the seminar, he put forward a practical method of measuring the Q factor in mid-to-small-scale earthquakes.

• 赫兹低音单元的机械品质因数较低。

  The Q factor of Hertz bass unit machines is relatively low.