当这个小装置以每秒60亿周的高频速度振荡时，它表面的“压电”材料会产生一个很容易被检测到的振动电场。
As the doohickey hummed away at a very high frequency-a whopping 6 billion cycles per second-the "piezoelectric" material in it produced a warbling electric field that was easy to detect.
本文提出了一种运用自激振荡原理设计液压振动系统的新方法。
A new approach to the designing of hydraulic vibrating system on the principle of self-sustained oscillation is proposed.
结合了解析方法和数值方法优点，本文提出了一种求解机械振动和电振荡问题的新方法。
By combining the merits of the analytic method and those of the numerical method, this paper proposes a new method for solving the problem of mechanical vibration and electrical oscillation.
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