预测了HAZ中晶粒的分布，以及不同的热输入对HAZ晶粒长大的影响和HAZ中晶粒长大的热钉扎效应。
The grain distribution and heat pining of grain growth in the welding HAZ. Different influence were predicted by different heat input.
她的脚裹在沉重的钉靴里，这个热的不像样的小孩艰难地爬上了山。
With her feet encased in heavy hob-nailed boots, this hot and shapeless little person toiled up the mountain.
随焊接热输入和激光功率密度的增大，焊缝截面由钉形向近X形转变。
With increase of heat input and laser power density, the cross section of the weld transformed from nail shape to near X shape.
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