The crack appears at the edge angle due to stress concentration caused by alternating load, which finally leads to the fissuring of die plate.
凹模在使用过程中，由于交变载荷的作用，使碳化物的棱角处应力集中出现裂纹，最终导致凹模开裂。
The pre-embedded approach can resolve the issue of monitoring dead load stress, but the long-term monitoring can not be achieved due to sensor life.
预埋的方式可解决恒载应力的监测问题，但存在因传感器寿命问题而不能实现长期监测；
The injury within the knee is mainly due to mechanical stress distribution imbalance or excessive load which cause cartilage wear.
膝关节内损伤主要是由于机械应力分布失衡或负载过度引起软骨磨损所致。
应用推荐