發送短信 : Development of a calibration facility for optical fiber length standard

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