Surveying the internal resistance of a sensitive electric current meter is a rather difficult and complicated electromagnetic experiment which is hard to get a high precision.
灵敏检流计内阻测量实验是电磁学实验中一个比较复杂有相当难度的实验，难就难在如何提高测量精度。
This paper introduces the defects of brine purification in the dosing process of caustic soda and proposes method to reduce brine cost with electromagnetic flow meter.
主要介绍了我厂卤水净化在烧碱的加药过程中存在的缺陷及如何改进使用电磁流量计，降低卤水成本。
When Sharon Leong conducts field work, she packs a digital camera, a thermometer and an electromagnetic field meter.
当沙龙鸿进行实地工作，她折了数码相机，一个温度计和一个电磁场米。
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