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

最开始是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式，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.

最开始的引擎是涡轮喷射式，目前已；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.

最开始的是喷射式，目前已淘汰；然后是螺旋桨式，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.

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.

最开始的擎是涡喷射，目前已淘汰；然后是涡旋擎，现在仍可在小飞上看到。