發送短信 : Investigation on the use of metalens fabricated with 3D printing for ultrasound imaging in non-destructive testing

  ______    _____    _    _    _    _    _    _   
 /_   _//  |  ___|| | || | || | || | || | || | || 
   | ||    | ||__   | || | || | || | || | || | || 
  _| ||    | ||__   | \\_/ || | \\_/ || | \\_/ || 
 /__//     |_____||  \____//   \____//   \____//  
 `--`      `-----`    `---`     `---`     `---`