... concrete made with iron shot 含铁粒混凝土 concrete pit 混凝土槽 concrete pressure vessel 混凝土压力容器 ...
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pit sand concrete 山砂混凝土
·2,447,543篇论文数据，部分数据来源于NoteExpress
The operation came a day after workers plugged a highly radioactive water leak from a concrete pit connected to the number two reactor, using sodium silicate - known as ''water glass''.
BBC: Japan quake: Nitrogen pumped into nuclear reactor
He said there was some work being done in the pit by concrete workers at the time, who all escaped safely.
CNN: fire
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