利用等效线弹簧模型近似计算了含裂纹转动轴的自由振动基频。
In this paper a model of the equivalent linear spring is proposed for approximately calculating fundamental frequencies of a vibrating shaft with an arbitrary crack.
分子几何构型和振动基频对计算条件不太敏感，总能量和键能对计算结果较敏感。
The molecular geometry and the fundamental vibrational frequency are insensitive to the computation conditions, while the total energy and bond energy are pretty sensitive.
研究表明，传统的判断西瓜成熟度的含糖量与西瓜的振动基频有较好的相关关系。
The results showed that there was a better correlation between the first natural freqency( f ) and sugar contents of watermelon.
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