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

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	Park Range park ranger Parks, Gordon parks officer Parks, Rosa park the bus parkward park warden parkwards parkway parky Parl. parlance parlando parlatic parlatory parlay parle parlementaire parley parleyvoo parliament parliamental parliamentarian parliamentarianism

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

printing key frame