短語(yǔ)詞組短語(yǔ)containment shell penetratin 安全殼貫穿件reactor containment shell 反應(yīng)堆安全殼nuclear power plant containment shell 核電站安全殼free -standing steel containment shell 自立式鋼安全殼shell containment 圍阻外殼 返回 containment shell