發送短信 : Develop and test a micro-pump based on acoustic impedance miss match

  _____     ______    _  __   _    _             
 |__  //   /_   _//  | |/ // | || | ||     ___   
   / //     -| ||-   | ' //  | || | ||    /   || 
  / //__    _| ||_   | . \\  | \\_/ ||   | [] || 
 /_____||  /_____//  |_|\_\\  \____//     \__ || 
 `-----`   `-----`   `-` --`   `---`       -|_|| 
                                            `-`