Which of the following statements about dislocation are correct.
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Which of the following statements about dislocation are correct.
A.刃型位错有一个多余半原子面。
B.滑移面必是包含位错线和滑移矢量的平面,在其他面上不能滑移。
C.螺型位错有多余半原子面,原子错排是呈轴对称的。
D.螺型位错会引起晶体体积膨胀。
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