It is pointed out that the external causes of cracks originating are effected by static pressure, thermal stress and structural shrinkingstress and etc.
指出裂纹产生的外因是钢水的静压力、热应力、组织收缩应力和其它外力的作用。
2
It naturally gets smaller as we age, but a review in Current Opinion in Psychiatry found that stress can cause structural damage and accelerate the shrinking process.
Stress caused by a slowing economy, shrinking retirement accounts and rising unemployment rates is driving some American smokers to increase the habit or delay quitting, according to a new survey.