發送短信 : Lifetime distribution based degradation analysis

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