题目内容：
哪种晶界能有效阻止滑移并且增加材料强度?
A.small-angle grain boundaries
B.twin boundaries
C.big-angle grain boundaries
D.large grains
参考答案：
选择题：哪种晶界能有效阻止滑移并且增加材料强度?
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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