發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Variable-geometry nozzle for surface quality enhancement in 3D concrete printing