Harmonics of these normal forces will resonate the natural frequency resonant modes of the stator structure so producing acoustic noise.

这些简正力量泛音将共鸣定子结构的自然频率共振方式如此导致音响噪声。

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Resonant sensor system is a kind of quasi-digital measuring device utilizing the effect that the natural frequency of the resonator changes according to the measured frequency.

谐振式传感器是利用某种谐振子的固有频率随被测物理量的变化进行测量的一类准数字式装置。

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Paralleling negative stiffness can not only decrease the isolator's natural frequency, but also improve the damping characteristic and increase the internal resonant frequency of the isolator.

并联负刚度弹簧不但显著降低了隔振系统的固有频率，同时也改善了系统的阻尼特性，提高了隔振系统产生高频内共振的频率。

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Singing too has evolved, and soprano singers reach their piercing high notes by precisely controlling the shape of their vocal tract to match its natural, resonant frequency with multiples of the one being produced by their vocal folds.

BBC: Helium-huffing gibbons 'sing with soprano technique'