[MrLu]塑膠管術語? OD ID 標稱管徑 一部影片 讓你了解常用的ＰＶＣ管
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Channel: MrLu水電機電分享
Views: 53,193
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Length: 21min 12sec (1272 seconds)
Published: Wed Feb 17 2021
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