| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasonic oscillator that has excellent anti-corrosion properties, controls reflection of ultrasonic waves from a piezoelectric device as much as possible, and effectively propagates energy of the ultrasonic waves into water to be treated. <P>SOLUTION: The ultrasonic oscillator comprises the piezoelectric device, and an antireflective coating that covers at least part of the piezoelectric device and is composed of glass. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
