working piston造句

The locomotive is complete with working pistons, rocker arms and wheels.
There is now a clear path through the valves and the working pistons, allowing free running for the coasting locomotive.
NOSCO followed up the same year with an airplane toy when pushed the wheels would turn a cog that ran the engine with working pistons and rotating propeller.
To dampen engine vibrations, Sternberg designed a motor with two cylinders and a third piston set at 180 degrees from the other two and having no other function than to act as a counterbalance to the two working pistons.
It's difficult to find working piston in a sentence. 用working piston造句挺难的