▼ハイテンションボルト2010/01/02 14:16 (C) 株式会社Forex/季楽な家開発奮闘記
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▼ハイテンションボルト2010/01/02 14:16 (C) 株式会社Forex/季楽な家開発奮闘記
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よみ：はいてんしょんぼると
鉄骨接合用ボルトで高い張力をもつ。