cast iron manhole cover的意思|示意
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铸铁人孔盖板
cast iron manhole cover的网络常见释义
铸铁人孔盖板 ... 铸铁人孔盖板 cast iron manhole cover 带螺栓的人孔盖板 bolted man hole cover plate 检查孔盖 人孔盖 人孔盖板 manholeplate ...