發送短信 : Femtosecond pump-probe spectroscopy of graphene oxide in water

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