By theoretical derivation and sample analysis, the structure law of ship radiated-noise demodulation -spectrum harmonic clan feature and correlative questions are investigated.
通过理论推导和样本分析，研究了舰船噪声调制谱谐波族特征蕴含的结构特性和应用于识别的相关问题。
2
In harmonic approximation, the specific heat obeys T3 law at low temperature, keeps a constant at high temperature.
在谐和近似下，低温比热符合T3定律，高温比热趋于常数。
3
The CAI demonstrational software of law of composition of mutual-perpendicular harmonic vibration is introduced in this paper, which is one of CAI software developed by our computer centre.