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引言大约三年前,笔者为日本机械学会志撰写了一篇展望液压伺服的文章〔1〕。本文概略地介绍从那以后发表的论文,并
Introduction About three years ago, I wrote an article looking forward to hydraulic servo for the Japan Society of Mechanical Engineers [1]. This article gives an overview of the papers published since then