常見例句雙語例句Which of the following involves a lever principle?以下哪項是與杠桿原理有直接關系的？Lever principle is a basic principle that all kinds of weighing apparatus in ancient time must abide by.杠桿原理是古代各類衡器工作時必須遵循的基本原理，在傳統(tǒng)計量發(fā)展過程中具有重要作用。Lever principle is a basic principle that all kinds of weighing apparatus in ancient time must abide by. It had played an important role in the developing process of traditional metrology.杠桿原理是古代各類衡器工作時必須遵循的基本原理，在傳統(tǒng)計量發(fā)展過程中具有重要作用。 返回 lever principle