發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Petrological, mineralogical, and geochemical compositions of coal in the Ombilin Basin, West Sumatra, Indonesia