發送短信

數:

提供者:

CAPTCHA:

  ______     ___    __    __   __   __    ______  
 /_   _//   / _ \\  \ \\ / //  \ \\/ //  /_   _// 
 `-| |,-   / //\ \\  \ \/ //    \ ` //   `-| |,-  
   | ||   |  ___  ||  \  //      | ||      | ||   
   |_||   |_||  |_||   \//       |_||      |_||   
   `-`'   `-`   `-`     `        `-`'      `-`'

Please enter what you see:

發送短信 : Design and experiment of high accuracy flowmeter for air duct