Fork failure of a forklift truck mainly takes a form of plastic deformation exceeding allowable limit, fragile breakage and early stage fatigue breakage.
叉车货叉失效方式主要表现为塑性变形超差，脆性断裂和早期疲劳断裂。
For primary pupils, early stage fatigue at the beginning of the week, notable fatigue at the end of the week can be detected, which is an unhealthy phenomena of nerve activity.
小学学周先以早期疲劳为主，后期处于显著疲劳状态，属不良神经活动类型。
The results show that the axle has defects in heat treatment, which leads to micro crack in early stage of service life and the extended crack finally causes fatigue fracture.
结果表明，该轴热处理上存在的不合理之处，导致轴在服役早期出现微裂纹，部分微裂纹在工作应力的作用下疲劳扩展，最终产生疲劳断裂。
The results show that the axle has defects in heat treatment, which leads to micro crack in early stage of service life and the extended crack finally causes fatigue fracture.
结果表明，该轴热处理上存在的不合理之处，导致轴在服役早期出现微裂纹，部分微裂纹在工作应力的作用下疲劳扩展，最终产生疲劳断裂。
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