round chart recorder

例句：

1. 1. Theround chart recorder is used to plot the data on a circle.
   圆图记录器用于在圆上绘制数据。
2. 2.The round chart recorder was invented by a scientist to help people understand complex information better.
   圆图记录器是由一位科学家发明的，旨在帮助人们更好地理解复杂的信息。
3. 3.The round chart recorder was used in the early days of the space race to track the progress of astronauts.
   圆图记录器在太空竞赛初期被用来追踪宇航员的进展。