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单词 portland cement
释义
Portland Cement
nnoun.substancea cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
Synset:Portland cement hydraulic cement
Hypernyms:cement
Inherited Hypernyms:hydraulic cementcementbuilding materialartifactwholeobjectphysical entityentity
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更新时间:2024/9/22 1:44:05