Centred on thermal radiation, noise and diffusion, the basic design principle and method of gas blowdown soundpipe are described in derail.
围绕热辐射、噪声和扩散详述了天然气放空立管的基本设计原则和方法。
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Imagine your sitting on your front garden admiring the shining sun when your neighbour comes with that annoying car with the buzzing sound and the exhaust pipe blows out this horrible black smoke.
The pipe, which can be dropped from 40, 000 feet and tracked for 200 miles, makes a whoosh on its descent, reminding me of the sound of those old pneumatic tubes in department stores.