...柱状晶生长；真空冶金 [gap=1188]Key words: multi-crystalline silicon, directional solidification, columnar crystal growth, vacuum metallurgy ...
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columnar crystal growth mechanism 柱状晶生长机理
columnar crystal growth
柱状晶体生长
以上为机器翻译结果，长、整句建议使用 人工翻译 。
But in the backing welding, columnar grain-growth will be appeared in the direction of crystal direction, it effects the welding quality seriously.
但是单面焊打底层焊缝中出现的沿焊缝柱状晶结晶方向的柱状气孔，严重地影响着船舶焊接质量。
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