由碰撞频率、速率与球磨工艺条件的理论关系推导出了球料比的最佳值。
The optimum value of ball-to-powder weight ratio has been deduced from theoretical relationship between frequency, speed of collision and ball-milling conditions.
DDS的优点是具有极高的分辨率、频率转换速率快、相位噪声低等；缺点是杂散度抑制比性能差，很难做到- 65d B。
DDS has both the advantages of high frequency resolution, rapid frequency change rate and low phase noise and the disadvantage of bad spur suppression performance with Max value of -65 dB.
结果表明，循环载荷下的裂纹扩展速率对试验频率、载荷比、温度及橡胶夹层厚度反映较敏感。
It was shown that crack growth rate increased as the temperature or limit load rate increased. It was also that crack growth rate decreased as rubber thickness and loading rate increased.
单模腔场的压缩性质受到外加驱动场的拉比频率，腔模频率与外加相干场频率的失谐量以及腔场衰减速率的影响。
The squeezing of the single mode cavity field is influenced by the driving field Rabi frequency, the cavity-mode frequency detuning from that of a coherent external field and the cavity decay rate.
单模腔场的压缩性质受到外加驱动场的拉比频率，腔模频率与外加相干场频率的失谐量以及腔场衰减速率的影响。
The squeezing of the single mode cavity field is influenced by the driving field Rabi frequency, the cavity-mode frequency detuning from that of a coherent external field and the cavity decay rate.
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