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近几年来,国外一些先进国家在计量光栅技术方面取得了重要进展。本文根据笔者在国外实地考察结果,对国外的最近动态作了概要的评述,并较详细介绍了几项成果。
In recent years, some advanced foreign countries have made important progress in measuring grating technology. Based on the author ’s fieldwork results in foreign countries, this article gives a summary review of the recent developments in foreign countries and presents several achievements in detail.