Jisho

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てっきん 鉄筋コンクリート
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Noun
1. reinforced concrete; ferroconcrete​
Wikipedia definition
2. Reinforced concrete​Reinforced concrete is concrete in which the undesirably low tensile strength and elasticity of the concrete component are averted by including reinforcing structures of high tensile strength in the mass of the concrete. Such structures usually, though not necessarily, are reinforcing bars of steel and also usually, though also not necessarily, are embedded passively in the concrete before it sets.
Read “Reinforced concrete” on English Wikipedia
Read “鉄筋コンクリート” on Japanese Wikipedia
Read “Reinforced concrete” on DBpedia

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