The quality of being resonant.

共鸣。

The prolongation of sound by reflection; reverberation.

回响；反响。

The sound produced in the percussion of some part of the body, esp. the chest.

【医】(听诊时的)叩响。

An unstable elementary particle or group of particles of extremely short life.

共振子(一个或一组不稳定而寿命极短的基本粒子)。