發送短信 : Lightweight geopolymer made of highly porous siliceous materials with various Na<inf>2</inf>O/Al<inf>2</inf>O<inf>3</inf>and SiO<inf>2</inf>/Al<inf>2</inf>O<inf>3</inf>ratios

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