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；然后是涡轮式引擎，现仍飞机上看到。

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

最开始的引轮喷射式，目前已淘汰；然后轮螺旋桨式引，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，现在仍可在小上看到。

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

最开擎是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式擎，现在仍可在小飞上看到。

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

最开始的引擎是喷射式，目前已淘汰；然后是旋桨式引擎，现在仍可在上看到。

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。

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

最开始的引擎是喷射式，目前已淘汰；然后是螺旋桨式引擎，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。