發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Extending the chemistry of carbones : P-N bond cleavage via an SN2′-like mechanism