电磁屏蔽混凝土
Electromagnetic shielding concrete
线屏蔽混凝土
x ray shielding concrete x
丰满混凝土重力坝
Fengman concrete gravity dam
高温重混凝土
high temperature heavy concrete
官地混凝土重力坝
guandi concrete gravity dam
混凝土重力坝与岩基
concrete gravity dam and foundation system
混凝土重力式岸壁
concrete gravity quaywall