Piping English ( 배관 영어 )
캐나다 미국에서 쓰이는 배관 영어 ( plumbing, piping, English )
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piping term ( 배관 용어 )
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Golf
Thursday, July 1, 2010
so that
DWV fittings are designed so that they wil form a smooth surface when they are used to connect piping.
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