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  Concrete

Sigma KEE - Concrete

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具体
Concrete is a class of CompoundSubstances used as building materials. Concrete is made up of Mineral pieces (sand or gravel) and a Cement material used to bind them together.
Relationships      
Parents 混合物 A Mixture is two or more PureSubstances, combined in varying proportions - each retaining its own specific properties. The components of a Mixture can be separated by physical means, i.e. without the making and breaking of chemical bonds. Examples: Air, table salt thoroughly dissolved in water, milk, wood, and concrete.
Children 预拌混凝土


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