發送短信

數:

提供者:

CAPTCHA:

 ______      ___      ______   __   __   _    _   
|      \\   / _ \\   /_   _//  \ \\/ // | \  / || 
|  --  //  / //\ \\    | ||     \ ` //  |  \/  || 
|  --  \\ |  ___  ||  _| ||      | ||   | .  . || 
|______// |_||  |_|| /__//       |_||   |_|\/|_|| 
`------`  `-`   `-`  `--`        `-`'   `-`  `-`

Please enter what you see:

發送短信 : Airborne collision evaluation between drone and aircraft engine : effects of position and posture on damage of fan blades