名词子结构; 基础; 路基
1. 下部结构：我们先要知道什么叫做桥梁. 桥梁简称为桥,桥是一种架空的人造通道. 概括的说,桥梁由四个基本部分组成,即上部结构(superstructure)、下部结构(substructure)、支座(bearing)和附属设施(accessory).
2. 亚结构：照射选择性地杀灭了敏感亚群,存活的后代是放射抗拒的亚群,因此放射敏感性降低;另一种认为细胞群受照射后存活后代细胞的亚结构(substructure)发生了变化,即射线诱导细胞产生了针对DNA损伤的更强的修复能力,
3. 次结构：n 如果团体必须增大时,就要将结构分化,使每一个次结构(substructure)仍有足够的参与,且团体成员必须容忍领导者取向(leader-centered). n 封闭性团体可以不大重视成员的多寡,但是开放性团体的大小却很重要,以免造成成员流失.
4. 子结构：substratosphere 亚同温层,亚平流层 | substructure 子结构 | subsystem 视差角,对向角
1. The Nantong section has been dismantled and the substructure of medium and small bridges has been completed.
2. Substructure is on display at the LSE Atrium Gallery until Sept 30.
noun
1. lowest support of a structure
e.g. it was built on a base of solid rock
he stood at the foot of the tower
Synonym: foundation base fundament foot groundwork understructure
2. substructure
2. the basic structure or features of a system or organization
Synonym: infrastructure