أرسل هذا في رسالة قصيرة: Characterization of slag from combustion of pulverized lignite with high calcium content in utility boiler

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