ES官网reference翻译文章(11)—Avg Aggregation均值聚合
对ES官网的reference的翻译，同时也是备忘，ES版本为7.5下面是正文翻译，附上原文链接https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-avg-aggregation.html==================================...
