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1. Oxford Dictionary

   attenuation

   • IPA[ətɛnjʊˈeɪʃ(ə)n]

   英式

   • n.
     the reduction of the force, effect, or value of something；the reduction of the amplitude of a signal, electric current, or other oscillation

   • noun: attenuation, plural noun: attenuations

2. • 釋義

   n.

   名詞

   • 1. the reduction of the force, effect, or value of something human security required the attenuation of a wide range of threats to people
   • ▪ the reduction of the amplitude of a signal, electric current, or other oscillation the products are used mostly by aircraft manufacturers for noise attenuation in engine housings attenuations of the order of 50 to 200 dB are required
3. • 更多解釋

   attenuation

   • IPA[əˌtenyo͝oˈāSH(ə)n]

   美式

   • n.
     the reduction of the force, effect, or value of something: human security required the attenuation of a wide range of threats to people

   Oxford American Dictionary