Decay by time machine 被时间腐烂的机器
He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.
他发现，声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。
You can play with the effect by changing the delay time, decay factor, and clicking Preview until you have the exact sound effect you want.
您可以通过更改延迟时间、衰减系数和单击p review播放效果，直到您获得想要的音效为止。
But that assumption was challenged in an unexpected way by a group of researchers from Purdue University who at the time were more interested in random Numbers than nuclear decay.
但是普渡大学的一组研究者用意想不到的方式挑战了衰变速率恒定这个假设。相比于原子核衰变，他们对随机数更感兴趣。
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