螺旋桨

The timing of the gun was precisely synchronized with the turning of the plane’s propeller.

风门的调速与机螺旋桨的转动精确同步。

The propeller started to spin around.

螺旋桨开地旋转起来。

The ship's screw stopped.

那船的螺旋桨停止转动了。

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

最开的引是涡轮喷射式，目前已淘汰；然后是涡轮螺旋桨式引，仍可小机上看到。