英语词汇“h and d speed”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	h and d speed
释义	h and d speed \\|āchənˈdē-\ noun Usage: usually capitalized H&D Etymology: after Ferdinand Hurter and Charles Driffield fl 1890 : a number indicating the sensitivity of a photographic emulsion determined by the method of Hurter and Driffield
随便看	accepts accept service access access accessary access clerk access control accessibility accessible accessibleness accessibly accession accession accessional accession book accession number accessions accession service accessions register accessit accessorial accessorius accessorize accessory accessory

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