發送短信 : Structural studies of poly(p-phenyleneamine) and its oxidation

            ______    ______    _____   __    __  
    ___    /_   _//  /_   _//  |  ___|| \ \\ / // 
   /   ||   -| ||-   `-| |,-   | ||__    \ \/ //  
  | [] ||   _| ||_     | ||    | ||__     \  //   
   \__ ||  /_____//    |_||    |_____||    \//    
    -|_||  `-----`     `-`'    `-----`      `     
     `-`