无气孔和沙眼，焊接后可直接进行削磨，抛光加工及皮皱处理。
No bubble and trachoma produced, directly grinding, polishing and wrinkle treatment after welding.
制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。
The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
我们必须避免机加工后在铸件商产生气孔。你们现在使用的铸钢是什么等级的？对于我方来说17级是最好的。
We need to avoid the air holes in the casting which appear after machining. What grade casting steel do you use?, for us grade 17 should be best.
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