He used a very sensitive torsion balance . 他利用了一架非常灵敏的扭力天平。
2.
Evaluation of uncertainty in indication error of torsion balance 扭力天平示值误差不确定度评定
3.
Test method for properties of investment casting slurry - part 7 : the torque balance sedimentation analytical method for the determination of refractory powder granularity 熔模铸造涂料性能试验方法第7部分:扭力天平沉降分析法测定耐火粉粒粒度