タワーの同心変径に基準はありますか？600から500に変わるタワーセクションの接続部の変径
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タワーの同心変径には基準がありますか？600から500に変わるタワーステージの接続部の変径について、ご存知の方はいますか？
これは非標準の円錐殻として計算し、一般的にはまずこの変径部の長さを決めて、半頂角を定めます
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