轴线 (zhóu xiàn) — (geometry, mechanics) axis; (mechanics) axle; spool (for thread, cotton, etc.)

Definition

Examples

• 这条线是图形的轴线。
  Zhè tiáo xiàn shì tú xíng de zhóu xiàn.
  This line is the axis of the figure.
• 车的轮子装在轴线上。
  Chē de lún zi zhuāng zài zhóu xiàn shàng.
  The wheels of the car are mounted on the axle.
• 她把线绕在轴线上。
  Tā bǎ xiàn rào zài zhóu xiàn shàng.
  She winds the thread around the spool.