英语词汇“printing key frame”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	printing key frame
释义	printing key frame now historical noun A typewriter for producing embossed type, designed for use by blind people. The device was patented by Pierre Foucault in 1849 and was exhibited in London at the Great Exhibition of 1851.. Origin Mid 19th century.
随便看	sell someone a bill of goods sell someone a dummy sell someone a (or the) dummy sell someone a pup sell someone down the river sell someone/thing short sell something for a mess of pottage sell the pass sell-through Selma Selous, Frederick Courteney seltzer seltzer water selva selvage selvedge selves Selye, Hans Hugo Bruno Selznick, David O. SEM Sem. sema semacode Semainean Semainian

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printing key frame