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拱券
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拱券
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拱券
由块状料(砖、石、土坯)砌成的跨空砌体。是拱和券的合称。利用块料之间的侧压力建成跨空的承重结构的砌筑方法称发券,用此法砌于墙上做门窗洞口的砌体称券;多道券并列或纵联的构筑物(水道、屋顶)称筒拱,用此法砌成的穹窿称拱壳。
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data encryption standard
data encryption standard, DES
data encryption standard,DES
data envelopment analysis
data envelopment analysis (DEA)
data error
data evolution
data exchange
data extract
data extraction
data extraction and integration
data federation tool
data filtering
data filtration
dataflow
data flow analysis
dataflow analysis
dataflow architecture
dataflow computer
dataflow diagram
dataflow diagram, DFD
dataflow integrity detection
data format
data format in additive manufacturing
data forwarding
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