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单词 light valve
释义

WordReference Random House Unabridged Dictionary of American English © 2024
light valve′, [Elect.]
  1. Electricitya light-transmitting device having transmissions that vary in accordance with an electric input, as voltage, current, or an electron beam, used chiefly for recording sound on motion-picture film.
  • 1925–30

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更新时间:2025/7/24 1:39:29