發送短信 : Moisture and heat flow in unsaturated soil

 _    _    __   __    ______   __   __    ______  
| || | ||  \ \\/ //  /_   _//  \ \\/ //  /_   _// 
| || | ||   \ ` //   `-| |,-    \ ` //   `-| |,-  
| \\_/ ||    | ||      | ||      | ||      | ||   
 \____//     |_||      |_||      |_||      |_||   
  `---`      `-`'      `-`'      `-`'      `-`'