chemically pre-stressed concrete pipe
... chamber井室;检查室 chemically pre-stressed concrete pipe 自应力混凝土管 circular conduit 园形管道 ...
基于16个网页-相关网页
self-prestressed concrete pipe
... 自应力混凝土管 chemically prestressed concrete pipe 自应力混凝土管 self-prestressed concrete pipe 综合管道、共同沟 combined duct ...
基于4个网页-相关网页
·2,447,543篇论文数据,部分数据来源于NoteExpress