快纵波的相速度随频率的增大以指数形式减小。
And the phase velocity of fast wave will decrease exponentially with frequency.
同时，运用纵波波速的比值——“龟裂系数”方法对扶余油层储层的裂缝发育频率进行了分析、计算。
In the meantime, fracture developing frequency of Fuyu oil pay zone is analyzed and calculated by using ratio of vertical wave velocity - "crocodile factor" method.
通过求解弹簧中纵波的波动方程，讨论了弹簧质量对振子的振动频率及弹簧劲度系数的影响。
The effect of spring mass on oscillation frequency and elastic constant is discussed by solving the wave equation.
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