Centred on thermal radiation, noise and diffusion, the basic design principle and method of gas blowdown sound pipe 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。
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.
设想一下，你正坐在自家的宅前花园中享受着明媚的阳光，这时，你的邻居开着那辆嘟嘟作响、排气管冒着可怕黑烟的汽车过来了。
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.
纸板管被从40 000英尺高空投下，可跟踪200英里，它嗖嗖地飞速移动，让我想起了百货商店里老旧气压管道的声音。
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