vacuum variable capacitor造句

例句与造句

1. Vacuum variable capacitors are generally more expensive than air variable capacitors.
2. A vacuum variable capacitor uses a set of plates made from concentric cylinders that can be slid in or out of an opposing set of cylinders ( sleeve and plunger ).
3. It's difficult to find vacuum variable capacitor in a sentence. 用vacuum variable capacitor造句挺难的