porosity in the weld 焊缝中气孔
Occasionally porosity can be found in the face of the weld while sometimes the face may appear porosity free, but deep inside the weld, porosity may exist.
偶尔孔隙中可以找到面对焊缝而有时面对可能出现孔隙免费的，但内心深处的焊缝，孔隙度可能存在。
Disadvantages include risk of hydrogen cracking in carbon steels and weld metal porosity in aluminium alloys.
缺点是在碳钢中有氢致裂纹、铝合金中有焊缝气孔产生的危险。
Recognizing that the solubility of gas is greater in the liquid state than in the solid state, the subject of weld porosity is relevant to fusion zone discussion.
认识到溶解度的气体是更大的，在液体状态，比在固体状态下，受焊缝孔隙率是相关的熔合区的讨论。
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