rotating drum造句怎麼寫

A line printer in which the type is mounted on a rotating drum that contains a full character set for each printing position.

a rotating drum holding paper on which a stylus traces a continuous record (as of breathing or blood pressure).

rotating drum image scanning digitizer

Mechanical Brakes are the most common; they dissipate the kinetic energy as heat generated by mechanical friction Between a rotating drum or disk and a stationary friction element.