發送短信

數:

提供者:

CAPTCHA:

 __   __   _    _     ______   _    _     ____    
 \ \\/ // | || | ||  /_   _// | || | ||  |  _ \\  
  \   //  | || | ||  `-| |,-  | || | ||  | |_| || 
  / . \\  | \\_/ ||    | ||   | \\_/ ||  | .  //  
 /_//\_\\  \____//     |_||    \____//   |_|\_\\  
 `-`  --`   `---`      `-`'     `---`    `-` --`

Please enter what you see:

發送短信 : Thickness-mode nonlinear vibration of quartz crystal with initial stress and cut-identification for optimal frequency sensitivity