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sound head
释义
WordReference Random House Unabridged Dictionary of American English © 2024
sound
′
head′,
[
Motion Pictures.
]
Cinema
a mechanism through which film passes in a projector for conversion of the soundtrack into audio-frequency signals that can be amplified and reproduced. Also called
sound
′
gate′.
1930–35
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更新时间:2026/8/16 8:12:51