...一个周期信号 x(t),满足狄里克利条件,那么,它就可 以被看作是由很多不同频率的互为谐波关系 谐波关系(harmonically related)的正弦信号所组成,其 谐波关系 中 每 一 个 不 同 频 率 的 正 弦 信 号 称 为 正 弦 谐 波 分 量 (Sinusoid component) , 其 ...
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本文分析了工作原理,并对移相角与输出各次谐波的幅值,THD的关系做了详细的理论分析。
Its principle is analyzed in this paper, and the relation of phase shifted Angle, the amplitude of each harmonic content and the THD is also analyzed in detail.
目的:利用实验性兔肝对二次谐波成像中的剂量-效应关系进行声学定量分析。
Objective: to have an acoustic densitometry (AD) analysis about the relationship between doses and effects in experiment rabbit liver with second harmonic contrast imaging.
研究了活齿端面谐波齿轮各啮合副齿面修形的原则,得出了波发生器、活齿前后端和端面齿轮齿面的修形高度之间必须满足的关系。
The modification principle of tooth surface is deduced, and it draws the conclusion that the modificative tooth depth of wave producer, end face gear and oscillating teeth have certain relation.
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