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外观：表面平整光滑、无磕碰、气孔均匀整齐。
Appearance: smooth surface, no bump, uniform pores and tidy.
youdao
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通过检测发现，铸件的表面和内部都存在气孔。
The results show that there are gas holes in the surface and the casting;
youdao
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通过检测发现，铸件的表面和内部都存在气孔。
The results show that there are gas holes in the surface and the casting;
youdao