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	regency regenerable regeneracy regenerant regenerate regenerated regenerated cellulose regenerately regenerateness regeneration regeneration regenerative regenerative regenerative braking regenerative cooling regenerative cycle regenerative furnace regeneratively regenerative motor regenerator regeneratrix regenesis regensburg regent regent

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