發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Roles of superconducting magnetic bearings and active magnetic bearings in attitude control and energy storage flywheel