發送短信 : Identification and modelling of a quadrotor

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