發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Neutralized ion beam modification of cellulose membranes for study of ion charge effect on ion-beam-induced DNA transfer