發送短信 : Zeolite beta catalysts for n-C7 hydroisomerization

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