Your vocal tract is just an open-ended tube too, so it has resonant frequencies.

你的声道也是一个开口的管子，所以它有共振频率。

Parasaurolophus' general resonant frequency as low as 40 hertz, a sound almost as deep as a foghorn.

副栉龙的共振频率一般低达40赫兹，这种声音几乎和雾角一样低了。

If these vibrations occur at a system's resonant frequency, then oscillation generates excitation and a bridge can lose its structural integrity.

如果这些振动发生在一个系统的共振频率。那振荡会形成刺激，桥便有可能失去结构完整性。

Whatever these two lower peaks are, whatever pair of resonant frequencies some given mouth shape amps up, that's what we hear when we hear vowels.

不管这两个较低的峰是什么，不管给定嘴型的共振频率是多少，这就是我们听到的元音。

And it's so strange that when we hear certain special pairs of resonant frequencies, just these two certain amped up sound peaks, they sound like vowels.

奇怪的是，当我们听到某些特殊的共振频率对时，只有这两个特定的放大声峰，它们听起来像元音。

Each of the spikes attached to the seeds in an ear of barley, wheat or rye has a resonant frequency that depends, like the note plucked from a harp string, on its length.

在大麦、小麦或黑麦的穗中，每一个附着在种子上的穗状物都有一个共振频率，就像从竖琴弦上拨动的音符一样，取决于它的长度。