發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Liquid phase microextraction using knitting wool as the extractant phase holder before chromatographic analysis: A new approach for trace analysis