有规律的重复活动如声波、光波、无线电波都有一个特定的频率，或者说是每秒的波动次数。
Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
鉴于脉冲星规律的射电及X射线脉冲并未发生改变，因此学者们怀疑波动源自于星云的内层。
Since the pulsar's regular radio and X-ray pulses have not altered, researchers suspect that the fluctuations originate in the inner portion of the nebula.
通过观察每天的活跃股票的波动，我得出一个结论：股票每次在突破8点或10点前都会遵循一定的规律。
Say that after studying every fluctuation of the day in an active stock I would conclude that it was behaving as it always did before it broke eight or ten points.
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