The results show that the properties resistance to plastic deformation and crack propagation of the experimental steel both reduce along with temperature drops.

结果表明，该试验钢的抗塑性变形能力、抗裂纹扩展能力均随温度降低而降低。

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Hardness is a measure of the resistance to localize plastic deformation.

硬度是材料抵抗局部塑性形变的量度。

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