世界各地，但有一定的集中区域。
All over the world, but the concentration definitely varies.
随着延伸率增大，晶界易成为应力集中区。
With elongation increase, high stress concentrations tend to occur at grain boundaries.
差应力大小与层理分布和应力集中区的关系；
The effect of the different stresses on the trend of foliation and high stress area;
此后几年，布达佩斯成了犯罪集团重要的集中区。
The next few years, Budapest became crime group important clusters.
此后几年，布达佩斯成了犯罪集团重要的集中区。
The next few years, Budapest became crime group important clusters.
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