スイッチバルブの全開/全閉時間要件の規格
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バルブ規格に精通しているユーザーの方に、切替バルブの全開から全閉、または全閉から全開までの時間要件に関する規格をアップロードしていただきたいです。ありがとう。
日常操作の規範？これはありますか？
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