笔者在介绍反射裂缝概念基础上，简要叙述了反射裂缝形成机理及扩展规律的几种理论。
The author introduces the conception of reflection crack, on this basis briefly narrates the mechanism of reflection crack forming and its extension law.
笔者在介绍反射裂缝概念基础上，简要叙述了反射裂缝形成机理及扩展规律的几种理论。
The author introduces the conception of reflection crack, on this basis briefly narrates the mechanism of reflection crack forming and its extension law.
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