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铜合金铸件中的气孔是指位于铸件内部或外表上的、个别或成群集中、大小形状不同、且大半为球形的空隙,其内壁平滑整洁。铸件中的气眼(一般也称为针孔)是铸件内部集中的细小的,甚至有些为肉眼所不能看到的细小孔眼。
Copper alloy castings in the pores refers to the casting inside or outside the surface, in individual or cluster, different size and shape, and the majority of spherical voids, the inner wall smooth and clean. The air holes in castings (also commonly referred to as pinholes) are tiny, concentrated holes in the interior of the casting that are even invisible to the naked eye.