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φ219×6って何ですか?

2016-09-03View Original

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φ219×6って何ですか?
Reply #22016-09-03
この投稿は最後にylb913によって2016年9月3日20時45分に編集されました。φ219×6とは、管の外径が219mm、壁厚が6mmで、内径は219-6×2=207mmになります。
Reply #32016-09-03
管子の外径:219mm、壁厚:6mm
Reply #42016-09-03
この質問は、本を読んでから聞いてもらえますか?
Reply #52016-09-04
投稿者は本当にもっと学ぶべきだ。これは基礎だ
Reply #62016-09-05
4階の回答はとても的確でした:lol

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