“master phonograph record”的概念、定义、翻译、参考文献-科学参考

单词	master phonograph record
释义	master phonograph record [`mas·tǝr `fō·nǝ´graf ´rek·ǝrd] ^{ENGINEERING ACOUSTICS} The negative metal counterpart of a disk recording, produced by electroforming as one step in the production of phonograph records. Also known as master.
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