例句與造句

1. These include a plasma oscillating device, a penning trap and the polywell.
2. The magnetron is a self-oscillating device requiring no external elements other than a power supply.
3. Unlike woodwind instruments, which have a vibrating reed in the mouthpiece, in brass instruments a player's lips are the oscillating device that creates the note.
4. It's difficult to find oscillating device in a sentence. 用oscillating device造句挺難的