understructure

🇬🇧/ˈʌndəˌstrʌktʃə/ 🇺🇸/ˈʌndərˌstrʌktʃər/ 8
lowest support of a structure; "it was built on a base of solid rock" "he stood at the foot of the tower"

noun [抽象名词]基础;下层结构

Analysis of the understructure of the silo with an intermediate post
带内柱筒下层结构的分析

单词造句: