航空业的革新集中于民用航空喷气式发动机的研发，首先是涡轮螺旋桨发动机，后来是纯粹的喷气机。
Innovation in aviation has centered on the development of the jet engine for civil use, first in a turbo propeller form and later as a pure jet.
飞机各种能够飞行的带翼交通工具，通常比空气重，用喷气式发动机或螺旋桨驱动。
Any of various winged vehicles capable of flight, generally heavier than air and driven by jet engines or propellers.
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