The paper also sets up a new concept of bottom air column effect and discusses the action mechanism of bottom air column effect.

文中提出了底部空气柱效应新概念，探讨了底部空气柱效应的作用机理。

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The most important motivated mechanism which caused the heavy rain in Fuyuan and Malong is the coupling of stronger ascending motion and profound saturation air column.

强降水发生时有强的上升运动与深厚饱和气柱互耦结构是富源、马龙大暴雨产生的重要动力机制。

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With the index of cut hole's volume, depth and blasting fragmentation in the thesis, the simulated tests have been carried out upon cut blasting of bottom air column and conventional charge.

以槽腔体积、槽腔深度和爆破块度为指标，对底部空气柱装药和常规装药掏槽爆破进行了模拟试验。

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The horn obviously is a brass instrument and what makes the sound is a vibrating column of air.

显而易见的,圆号是个铜管乐器,它通过震动空气柱来发出声音

耶鲁公开课 - 聆听音乐课程节选

That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.

这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦

耶鲁公开课 - 聆听音乐课程节选

In this case, the basic column of air is twelve and a half feet long and there are something called "Partials" or the "Harmonic series" That happens in anything, on a string instrument or whatever, but on the horn it's very distinct and that's what makes the different notes.

像这样,基本空气柱有十二个,每个半英尺长,圆号能发出分音,或泛音列,弦乐器或是,其他别的乐器中都有,但在圆号上,效果相当不同,这就是它能奏出不同音符的原因

耶鲁公开课 - 聆听音乐课程节选

One is to change the length of the tube, and thus the length of the vibrating air column.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra

The vibrations of the lips, focused and amplified by the mouthpiece and directed into the tube, cause the column of air inside the tube to vibrate, and as in all wind instruments, the vibrating air column produces the sound of the instrument.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra

This is the so-called jet stream, the fast river of air that helps drive our weather, which interacts with the storm's updrafts to create a spinning column of air.

CNN: The making of a nightmare tornado