每秒钟

• per sec.
• per second

例句

1. 低音的与一相对少量的每秒钟音波周期相对应的低音的
   Having a pitch corresponding to a relatively small number of sound-wave cycles per second.
2. 中央C音相当於每秒钟振动256次。
   Middle C is equivalent to 256 vibrations per second.