prototype first flight 中文意思是什麼
prototype first flight
解釋
樣機第一次飛行-
Development for this plane began as early as 1938 and the first prototype made its maiden flight still propulsed by a piston engine in april 1941. the first jet powered version flew in july 1942
Me262的開發始於1938年早期,第一架原形機在1941年4月首次試飛,由一臺活塞式發動機推進,第一架使用噴氣式發動機推進的型號於1942年7月首飛
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