machine design

详细解释:【化】 机器设计; 机械设计

例句：

A machine designed to product print-like text on paper or similar material as a result of an operator manually depressing keys consecutively on a keyboard.一种机器，操作员连续按动键盘上的键时，在纸上或类似的材料上产生类似印刷的正文。