發送短信 : Optical property modification of ruby and sapphire by N-ion implantation

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