First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引是轮喷射式，目前已淘汰；然后是轮螺旋桨式引，仍可小飞上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是轮喷射式，目前已淘汰；然后是轮螺旋桨式引擎，现在仍可在小飞到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是涡喷射式，目前已淘汰；然后是涡桨式引擎，现仍可机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

的引擎是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式引擎，现在仍可在小飞机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是涡轮喷射，已淘汰；然后是涡轮螺旋桨引擎，现在仍可在小飞机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是涡轮式，目前已淘汰；然后是涡轮螺旋桨式引擎，现在仍可在小机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是涡轮，目前已淘汰；然后是涡轮螺旋桨引擎，现在仍可在小飞机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式引擎，现在仍可在小飞机上看到。

First came the turbojet, now obsolete, then the turboprop, which is still found onboard small planes.

最开始的引擎涡轮喷射式，目前已淘汰；涡轮螺旋桨式引擎，现在仍可在小飞上看到。