發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Densities of n-tris(hydroxymethyl)methyl-3-aminopropanesulfonic acid (TAPS) + glycol (DEG / TEG / T4EG) + water