發送短信 : Effect of printing parameters in 3D concrete printing : printing region and support structures

 _    _      ___      ____       ___     ______   
| || | ||   / _ \\   |  _ \\    / _ \\  |      \\ 
| || | ||  / //\ \\  | |_| ||  | / \ || |  --  // 
| \\_/ || |  ___  || | .  //   | \_/ || |  --  \\ 
 \____//  |_||  |_|| |_|\_\\    \___//  |______// 
  `---`   `-`   `-`  `-` --`    `---`   `------`