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-现代词典

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	alder-leaved dogwood alderliefest alderman alderman aldermanic alderman lizard aldermanly aldermanry alderney alderwoman aldicarb aldimine aldine Aldis alditol aldm aldo- aldo aldobionic aldobionic acid aldobiuronic aldobiuronic acid aldofuranoside aldohexose aldoketene

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