Impurities in its material affect the fatigue life.
材料中的杂质影响疲劳寿命。
Leather seemed to fascinate him and he often experimented with leaving clothes under a sunray lamp until the material suffered fatigue and the colors started to fade.
他好像被皮革迷住了，经常做试验把衣服放在紫外线灯下，直到料子经受疲劳，开始褪色。
Fatigue failure results from accumulation of cracks of deformation pro - cess of material.
疲劳破坏是材料在变形过程中产生的裂纹积累。
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