内江主体工程
main works on the inner river
工程主材
main construction material
公路工程主材价格
price of highway engineering main material
西线工程主要问题
main problems of the west line project
地质体与工程体
geo-body and structural body
防洪工程体系
flood control system
flood-control engineering system
Flood protection system
服装人体工程
human engineering of clothing