1.  attenuation
2.  damping

• 1. 衰减: Attenuation | Falloff | attenuate | to decay
• 2. 衰减器: Attenuator | Fader | FDR fader | attenuation pad
• 3. 对数衰减: logarithmic decrement | Quadratic Falloff | logarithmic damping

更多释义

• 1.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。
  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.
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• 2.人人都佩服她的耐心和永不衰减的好脾气。
  Everyone admired her patience and unfailing good humour.
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• 3.对数学狂人来说，这是标准的指数衰减。
  For math geeks, this is standard exponential decay.
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