热-机影响区有塑性变形流线，且范围较窄；
There are plastic deformation streamlines in the thermo-mechanically affected zone and it is quite narrow.
试样的流线、网格变化及硬度分布所显示的变形区范围和理论分析一致。
Displaed strain regions by the flow lines, network changes and hardness distributions show a good agreement with theoretical analysis.
通过实验和变形区流线变化、金相组织和显微硬度的变化，对精冲成形的过程、特点、精冲成形机理进行了研究。
On the basis of experiment and change of metal flow line, metallographic structure and micro-hardness in deformation zone, this paper researched process, characteristic and mechanism of fine-blanking.
豪华的外观，流线型的设计，外壳采用加厚钢板，不变形，坚固耐用。
It has splendent apperance, fairshaped design as well as thick and durable steel rind.
结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
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