dimensionless quantity

例句：

1. 1.The new model car has a dimensionless design, which makes it look more modern.
   这款新型汽车的设计是无尺寸的，看起来更现代。
2. 2. The scientist used a dimensionless formula to solve the problem.
   这位科学家使用了一个无尺寸的公式来解决这个问题。
3. 3. The dimensions of the room were measured by a dimensionless scale.
   房间的尺寸是通过一个无尺寸的刻度尺测量的。