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Surface tension is one of the basic physicochemical properties of liquids.
表面张力是液体的基本物化性质之一。
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Surface quality and mechanical properties of basic and pipe is the same.
表面质量和机械性能基本和管子是一样的。
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Surface quality and mechanical properties of basic and pipe is the same.
表面质量和机械性能基本和管子是一样的。
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