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Transducteur acoustique a selection de frequences
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Ultrasonic transducer with a piezoelectric element
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Transducteur electro-acoustique a grande elongation
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Piezoelectric vibrational and acoustic alert for a personal communication device
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Haut-parleur piezo-electrique
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(instruction)
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Reseau d'hydrophones en polymere a couches multiples
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KR20030071626A
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초음파 탐촉자 시스템
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球面弾性表面波センサ
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FR2466903A1
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Transducteur piezoelectrique reglable pour montre
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Piezoelectric transducer device
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一种传声器
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(instruction)
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静電マイクロホン変換器
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収音装置
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Telephonic receiver
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Sound receiver
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Sound pressure receiver
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Serge otjlianine |
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静電型電気音響変換器
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High-frequency sound signaling
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コンデンサマイクロホンユニット
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BE408767A
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BE452029A
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