steel lined reinforced concrete penstocks的意思|示意
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钢衬钢筋混凝土闸门
steel lined reinforced concrete penstocks的网络常见释义
钢衬钢筋混凝土压力管道 steel light-hydrocarbon spherical tanks 钢制轻烃球罐 steel lined reinforced concrete penstocks 钢衬钢筋混凝土压力管道 steel making-continuous casting-hot rolling 炼钢-连铸-热轧 ..