roof control by wall-shape pillar的意思|示意
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英 / /
屋顶由壁形柱控制
roof control by wall-shape pillar的网络常见释义
煤柱支撑顶板法 ... rolled stock shape consistency 轧制件形状均匀性 roof control by wall-shape pillar 煤柱支撑顶板法 sap-shape 汁状 ...