英语词汇“ruling engine”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	ruling engine
释义	ruling engine ruling engine [′rül·iŋ ‚en·jən] (spectroscopy) A machine operated by a long micrometer screw which rules equally spaced lines on an optical diffraction grating.
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