In a printer, the removable type element. A typewriter has a carriage which holds and moves the paper. 印刷机上可拆卸的打印部件。打字机有一个滑动架,用以固定和移动打字纸。
After you have typed one line of text on a typewriter, you have to manually return the printing carriage to the left margin position and manually feed the paper up one line. 在打字机上打完一行文本后,你得手动地把打印架推回左边的页面空白处,并且把纸调高一行。