英语词汇“ocker, william c.”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	ocker, william c.
释义	Ocker, William C. Ocker, William C. (1876–1942) aviator; born in Philadelphia. He is credited with many advances in instrument flying and with developing, in 1938, a more efficient type of airplane propeller. He was coauthor of an early manual on the theory and practice of instrument flight.
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Ocker, William C.