当这些压力波撞击海床时，会产生一种频率为0.01赫兹的连续振动，而对我们人类而言这个频率太低了，所以根本听不到，但却很容易被地震仪侦测到。
As these waves pound against the sea floor, they generate a constant vibration with a frequency of about ten millihertz, much too low for humans to hear but easily detectable with seismometers.
测试结果表明，该单片三轴硅微机械振动陀螺仪驱动模态的实际谐振频率与理论值之间的最大误差小于5%，满足设计要求。
The results indicated that the maximum error of the resonant frequencies be - tween the practical values and the theoretical ones was within 5%, meeting the design requirements.
方法：应用可调脉冲频率的振动应力刺激仪，对43只家兔尺骨骨折进行不同频率应力刺激。
Methods: The fractured ulna of 43 rabbits were stimulated by vibration stress force of different frequency.
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