The component having the lowest frequency in a complex vibration (fundamental frequency or first harmonic).
复杂振动中频率最低的成分(基频或一次谐波)。
Some sine waves are harmonic whose frequency does not equal to the frequency of fundamental component.
有些正弦波谐波，其频率不等于频率的基本组成部分。
The product host circuit has adopt the IGBT component, has complied with fundamental lattice new being old characteristic generation high frequency equipment with shell electron tube Bo.
本产品主电路采用IGBT器件，从根本上格新了以玻壳电子管为特征的老一代高频设备。
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