圆规座

例句：

1. 1. The engineer used a large circle stand to hold the large machine.
   工程师用一个大圆规座来支撑这台大型机器。
2. 2. The scientist placed his circle stand on the table for easy access to his tools.
   科学家把圆规座放在桌子上，以便轻松接触到他的工具。
3. 3. The construction worker used a circle stand to support the heavy beams during the building process.
   建筑工人使用圆规座在建筑过程中支撑沉重的梁。