灵敏电流计 meaning in English

microdetector
se itive galvanometer
sensitive galvanometer

Many experiments done by the students have showed that such method can increase extremely the accuracy of measuring the inner resistances of microdetector
经实验测定证明，该方法使测定灵敏电流计内阻的准确度有较大提高。
In this paper , the main reasons resulting in the errors in measuring the inner resistances of microdetector are analysed , and the improved method are put forward
摘要分析了光点复射式灵敏电流计内阻测定中误差产生的原因，提出了改进方法。