例句與造句

1. Principles of resonance and feedback are applied through photo and proximity electronics.
2. A "'long-range locator "'is a class of fraudulent devices purported to be a type of metal detector, supposedly able to detect a variety of substances, including gold, drugs and explosives; most are said to operate on a principle of resonance with the material being detected.
3. It's difficult to find principle of resonance in a sentence. 用principle of resonance造句挺難的