The operation of and design approaches to mechanical and piezoelectric(压电的) electric wave filters(滤波器) are discussed.
举一反三
- The sound wave is (). A: Mechanical transverse wave B: Mechanical longitudinal wave C: Electromagnetic wave D: X<br/>rays.
- How to produce ultrasound wave? A: negative piezoelectric effect of transducer B: Piezoelectric effect of transducer C: Thermal effect of transducer D: The magnetic effect of transducer
- What kind of wave does ultrasound belong to and has certain radiation? A: Electromagnetic wave B: Mechanical wave C: Particle wave D: Light wave
- 中国大学MOOC: In mechanical design, what the design must achieve is .
- The Wartsila RT-flex and MAN Diesel& Turbo()ME engine designs offer similar approaches to the electronic control of starting air and also to the electronic control and ____operation of the exhaust valve. A: mechanical B: Pneumatic C: hydraulic D: automatic