英语词汇“aperture diaphragm”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	aperture diaphragm
释义	aperture diaphragm ap·er·ture di·a·phragm a metal device that limits the area of the beam emerging from an x-ray tube.
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aperture diaphragm