单词jolly balance
un.: 比重天平；焦利天平网络: 弹簧比重天平；焦利秤；表面张力
焦利天平
比重天平
A Comparative Study of the Improved Jolly Balance and the Traditional Experiment
改进型焦利氏秤与传统实验对比研究
Determining the Gravitational Acceleration with Jolly Balance
用焦利秤测量重力加速度的实验