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通过对25ZG COD测试,得到并讨论了高阻力材料的裂纹张开位移δ=A+BlnH关系(H是伸张区高度,A、B为常数)。
Through the 25ZG COD test, the crack opening displacement δ = A + BlnH of high resistance material is obtained and discussed (H is the height of the stretching zone, A and B are constant).