Conventional electromagnetic current transformers(CT) possess high accuracy of steady-state electrical current measurement, but produce problems caused by magnetic saturation. By comparison, optical current transducers(OCT)have many advantages over CT and can measure fault transient current.
传统电磁式CT具有较高稳态电流测量精度，但存在饱和问题；而光学电流互感器(简称OCT)无此缺点，能测量故障暂态电流，但受温度应力引起的线性双折射的影响大，精度较低。
参考来源 - 基于自适应技术的组合式光学电流互感器的研究This article is a very good attempt of studying the large current FBG sensors, provided a reference for the fiber grating sensing technology into the high current measurement.
本文是研究光纤光栅直流大电流传感器的一次很好的尝试,为光纤光栅传感技术进入大电流测量领域提供一定的参考。
参考来源 - 光纤光栅直流大电流传感器研究The ocean current measurement has the important economic value, and has always been the marine scientist's research subject.
海洋流速测量具有重要的经济价值,一直以来就是海洋科研工作者的研究课题。
参考来源 - 时差法三维流速测量技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
So Current measurement is the basic of Electromagnetic surveying.
所以电流的测量是电磁测量的基础。
But the current measurement of prosperity is riddled with errors and omissions.
但是，当前的繁荣衡量到处都是错误和漏洞。
A number of error sources can have serious impacts on low current measurement accuracy.
若干误差源会对弱电流测量的准确度产生严重的影响。
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