發送短信 : Interpretation of concrete strength for nonstandard specimens

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