發送短信 : High-temperature superconducting bandpass spiral filter

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