أرسل هذا في رسالة قصيرة: Mesoporous activated carbon structure originated from cross-linking hydroxyethyl cellulose precursor by carboxylic acids

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