straight drawing in

Though the conservation of angle transformation,the paper obtains the function of the complex variable stress and answers of stress field strength factors K to near crack-tip of cracks in frontier conditions of level perforation crack .

　在满足斜拉应力状态平直穿透型裂纹边界条件情况下,确定了复应力函数进而采用保角变换求解,获得裂纹尖端附近K的表达式。