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

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發送短信 : Lamb wave propagation in a metallic semi-infinite medium covered with piezoelectric layer