压力波的频谱分析表明在高装填密度装药中，采用第二种点传火方案能削弱和抑制压力波的高频振荡成分，改善其振动特性。
The frequency spectral analyses show that the second ignition method could weaken and restrain the high frequency vibration, improve the characteristic of vibration in high loading density charge.
分析了数字方法运用于波形合成中由于DAC零阶保持特性造成的信号频谱高频失真的机理；
The mechanism of the signal spectrum distortion because of DAC's zero-order holding is analysed.
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