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ordinary concrete structure
释义
ordinary concrete structure
Encyclopedia
工学
混凝土结构
释
ordinary concrete structure
普通混凝土结构
以普通混凝土为主要材料建造的土木工程结构。普通混凝土(简称混凝土)是以水泥为胶结材料,以天然砂、石为骨料加水拌合,经过浇筑、凝结硬化形成的固体材料。为改善混凝土拌和物或硬化混凝土的性能,还可在其中加入各种外加剂和掺合料。其干表观密度为2000~2500千克/米3。普通混凝土结构在建筑工程中广泛使用。
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social stability
Social stability assessment
social stability evaluation of projects
social stability risk assesment
social stability risk assessment
social statics and social dynamics
social statistics
social status
social stock analysis
social stratification
social stratification of education
social stress theory
social structural statistics
social structure
social suffering
social supervision
social support
social support for the aged
social support networks
social support of emergency management
social support to destitute persons
Social Survey in Yang-jiagou of Mizhi County
social symbiosis
Social synergy innovation mode
social system
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