Care shall be taken to avoid stress concentration due to welding, heating and discontinuity of the structure or build-instress.
应该特别注意由于焊接，加热和结构的非连续性产生的应力集中和嵌入的应力。
2
While the togetherness of Christmas - ultimately what the day is all about — fosters surges in the happiness hormone, serotonin, the build up is characterised by high levels of stress, or cortisol.
圣诞节家人团聚的幸福感会使血清素水平升高，伴随而来的高度紧张感又会使得皮质醇水平升高。
3
The discipline of community psychology studies how community groups interact in times of stress and seeks to build more healthy community relationships by using the insights of modern psychology.