“等”是汉语等韵学中的一个基本概念,是用以分析汉语字音的重要标准和原则。没有“等”的概念,也就没有等韵。可以说“等”是等韵学的灵魂,它的产生和发展,反映了等韵的发生和发展。只有研究清楚了“等”概念的有关知识,才能更好、更全面地认识我国古代的等韵学。 “Etc ” is a basic concept in Chinese such as rhyme and is an important criterion and principle for analyzing Chinese pronunciation. There is no “” and other “concept, there is no such rhyme. It can be said that ” “ is the soul of other rhyming, its generation and development, reflects the occurrence and development of such rhymes. Only by studying the relevant knowledge of the concept of ”" and so on can we get a better and more comprehensive understanding of the ancient isochronology in our country.