Job stress on the impact of miners is the main cause of coal mine safety management accidents, so miners' job stress is a burning problem needed to be settled.

工作应激对煤矿工人的影响是导致煤矿安全管理事故发生的主要原因，所以，煤矿工人的工作应激是一个亟待解决的问题。

youdao

Crack in neck of hollow shaft is a very serious malfunction, main cause of the crack include: foundry defect, centralized stress, quality problems of welding and heat treatment.

中空轴轴颈裂纹是水泥磨的严重故障。中空轴轴颈裂纹产生的原因主要有：铸造缺陷，应力集中，焊接和热处理质量问题等。

youdao

A new view that the formation and evolution of the deformed part is the main internal cause of stress fracturing material is firstly put forward.

首次提出了变形局部化的形成与演化是材料准脆性断裂主要内因的新见解。

youdao