n.下部结构(基础；亚结构)
It can be applied to break firm and freezed ground in civil engineering, substruction and civil air defence works and so on. 土木工程及地下建筑，人防施工等工作中摧毁坚固冻结的地层。
foundations; the groundwork; substruction 根基
digital substruction arterography 数字减法血管造影术
Impact Dynamics Simulation of the Space Camera Based on Substruction 基于子结构的航天相机冲击动力学仿真
Application of Substruction for Finite Element Analysis of Portal Crane's Gantry 子结构技术在门座起重机门架结构有限元分析中的应用
