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【简答题】
简述螺型位错的重要特征。 1 、螺型位错没有额外半原子面; 2 、螺型位错线是一个具有一定宽度的管道,其中只有切应变,而无正应变 3 、位错线与晶体的滑移方向平行,位错线运动的方向与位错线垂直
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皮皮学刷刷变学霸
举一反三
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【单选题】Gucci's success shows that______.
A.
it has changed its fate with its own effort
B.
Gucci has successfully saved its own image
C.
opening its own stores is the key to success
D.
it should be the court's duty to save its image
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