题目内容

3.2What is the difference between crystallinity and amorphous materials?

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3.5What are the crystal directions and planes?

3.4What is the closest packing which can be achieved in a plane?

A cubic array
B. A Hexagonal array
C. A random array
D. None of the above

4.1 How many kinds of ponit defects have been mentioned in Lecture 4? What are they?

4.2 What is the relationship of the Burgers vetor and the edge dislocation line?

A. Parallel
B. Perpendicular