It is worth mentioning that the main objective of the research was to look for trends in best practice when designing forms.
值得一提的是，此研究的主要目地是寻找设计表单实践中的最佳流行趋势。
The first part contains an overview of the causes and significance of papers, the domestic and international trends in the field of research papers and the main content of papers.
文章第一部分为概述，概括介绍论文选题的原因及意义，当前国内外研究该领域的主要趋势及论文研究的主要内容和主要方法。
This paper Outlines the research advances in optical voltage transformers, and discusses the main problems associated with practical optical voltage transformers and the study trends.
本文概述了光学电压互感器的研究状况，并着重探讨了光学电压互感器实用化中存在的主要问题及今后的发展趋势。
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