涵管预制
culvert pipe prefabrication
混凝土预制管片
Concrete precast pipe element
静压预制管桩
static pressure fabricated pipe-pile
砼预制管桩
precast concrete tubular pile
预制管混凝土柱
column of concrete filled prefabricated tubular me
Column of concrete filled prefabricate tubular mem
预制管片
prefabrication pipe section
预制预应力管状桩
precast prestressed tubular pile
预制预应力混凝土
precast prestressed concrete
预制预应力混凝土单元
precast prestressed concrete unit
预制预应力混凝土技术
prefabricated prestresed concrete technology