英语词汇“printing frame”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	printing frame
释义	WordReference Random House Unabridged Dictionary of American English © 2024 print′ing frame′, [Photog.] Photographya shallow, boxlike device with a glass plate on one side and an opaque, removable back, for holding a negative firmly against printing paper in contact printing. 1870–75
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