英语词汇“h and d system”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 system
释义	h and d system noun Usage: usually capitalized H&D Etymology: after Ferdinand Hurter and Charles Driffield fl 1890 : a system for determining the speed of photographic materials that is based on the characteristic curve and related to the inertia of the material
随便看	aplodontia aplodontiid aplodontoidea aplogranite aplomb aplome aplopappus aploperistomatous aplustre aplysia aplysiidae apnea apnea apneic apneumona apneumones apneumonomorphae apneumonous apneusis apneustic apnoea apnoeic apo- APO apo

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