This paper presents a method used for calculating the natural frequency of gases subjected by small pressure pulsations in pipe systems. 本文介绍一种用以计算微压扰动下管道中气柱自振频率的方法。
In a circuit, crystal frequency can generally be slightly lowered by placing a inductor in series and increased by a capacitor in series. 在电路中，晶振频率随串联的电感轻微降低，随串联的电容增大。
