Contact problem of compound material plane with cracks under a rigid punch action is studied in the third chapter.

第三章研究了具任意形状裂纹复合材料平面在单压头作用下的接触问题。

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Contact problem of compound material plane with periodic cracks under periodic rigid punch action is studied in the fourth chapter.

第四章研究了具任意形状裂纹复合材料平面在周期压头作用下的接触问题。

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In the second chapter contact problem of a half-plane with periodic cracks under periodic rigid punch action is studied.

第二章研究了具任意形状裂纹的各向同性弹性半平面在周期压头作用下的接触问题。

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Quoting the Israeli army, Hanna said the Israeli pilots also made eye contact with him, and fired a warning shot across the front of the plane.

CNN: Israel shoots down light aircraft