發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Gravity pipe flow of polymeric bulk solids in pneumatic conveying system