concrete shield meaning in English

混凝土衬砌层
混凝土防护层
混凝土屏蔽

Design of gas - filled double - bend ducts in concrete shields against gamma radiation ; terms and conditions
防射线辐射的混凝土屏蔽墙中双弯充气管道的设计.术
Nuclear energy . protection against radiations . shielding windows against gamma radiations for concrete shielded walls
核能.辐射防护.水泥掩蔽的伽吗射线遮蔽窗
3d numerical simulation of stress and strain properties of concrete shield tunnel lining and modeling experiments
盾构隧道衬砌结构应力与变形的三维数值模拟与模型试验研究