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Electret
Noun
  materials
Noun
  are
Auxiliary
  quite
Adverb
  common
Adjective
  in
Adposition
  nature
Noun
.

Les matériaux d'électret sont de nature assez courante.
Mots et phrases
Nouveau
electret

A solid dielectric having a quasi-permanent charge; usually a metallized film; used in electroacoustic and electromechanical transducers and in air filters.

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materials

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are

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quite

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common

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in

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nature

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