Goodeve's rotational viscometer

例句：

1. 1. The machine is designed to rotate the parts in a circular motion.
   这台机器设计成能以圆周运动旋转部件。
2. 2. The new model car has a rotational speed of 3000 revolutions per minute.
   新款汽车的转速为每分钟3000转。
3. 3. The scientists conducted a rotational experiment to study the effects of gravity on objects.
   科学家们进行了一个旋转实验，研究重力对物体的影响。