单词 密实 例句 DEFINITIVE EXAMPLES 权威例句〔high-density polyethylene〕A strong, relatively opaque form of polyethylene having a dense structure with few side branches off the main carbon backbone.高密度聚乙烯:指一种浓密、相对而言不透明形式的聚乙烯,此...
词语 密实 释义 m sh1.秘密严实。 2.细密;紧密。...