• 2021-04-14
    The operation of and design approaches to mechanical and piezoelectric(压电的) electric wave filters(滤波器) are discussed.
  • (本章)讨论机械滤波器和压电电波滤波器的工作情况和设计方法。

    内容

    • 0

      A record of electric wave occurring in the brain is called _______.

    • 1

      A<br/>piezoelectric crystal is used to produce the ultrasound waves. What<br/>kind of ultrasound is produced? () A: Pressure<br/>wave ultrasound B: Electrical<br/>wave ultrasound C: Sound<br/>wave ultrasound D: Simple<br/>ultrasound

    • 2

      The fundamental principle in accordance with which all energy transformation in an electric circuit takes place has been already discussed.

    • 3

      In mechanical design, what the design must achieve is . A: physical size B: principle C: function requirements D: mechanism

    • 4

      中值滤波器和()。 A: 最大值滤波器可能有相同的滤波结果 B: 最大值滤波器不可能有相同的滤波结果 C: 中点滤波器可能有相同的滤波结果 D: 中点滤波器不可能有相同的滤波结果