... Frequency-change signalling 变频发讯 rate of frequency change 频率变率 Frequency Change Square Ratio 频率变化平方比 ...
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The non-linearity increases with the increase of the frequency change rate, which does not depend on the thickness of the resonant beam.
频率相对变化量与梁的厚度无关，增加频率的相对变化量也同时增加了输出信号的非线性度。
Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。
The results show that the deposit rate, composition and properties of coating change with the variation of duty ratio and pulse frequency.
结果表明，镀层的沉积速率、镀层成分及镀层的性能都随脉冲频率和占空比的变化而变化；
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