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。
But in the backing welding, columnar grain-growth will be appeared in the direction of crystal direction, it effects the welding quality seriously.
经x射线衍射分析，纯钛表面经阳极氧化处理后，其表面生成了一层非晶态的氧化钛薄膜，并且钛晶体的各个表面沿不同结晶方向的腐蚀速率不相同。
XRD results indicate that amorphous titanium oxide film is formed on the surface after anodic oxidation, and corrosion rates of titanium crystal vary along different crystalline orientation.
经过模具之后，聚合物分子需要一定的时间进行重新定型回复到随机方向，并再次结晶。
After the die, it takes some time for polymer molecules to get reoriented to a random manner again, and to recrystallize.
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