The chemical stress cracking of PET fiber-methylamine system is considered to be a fracture phenomenon of polymers.

PET纤维-甲胺系统的化学应力开裂被归结为一种高聚物断裂破坏现象。

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Theoretical basis, testing equipment, and current topics of chemical stress relaxation of wood are discussed in this review.

该文归纳、分析了木材化学应力松弛的测定基础、实验装置及研究现状 。

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Delamination and cause of polycarbonate (PC) thin-wall component were studied by comprehensive analysis methods and chemical stress cracking mechanism of PC delamination was found.

应用综合分析方法研究了聚碳酸酯(PC)薄壁件分层开裂及其起因，发现了分层的化学应力开裂机制。

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Stress is how your body reacts to physical, chemical,emotional or environmental influences.

VOA: special.2009.03.24

Relevant factors for comprehensive socio-economic risk assessments for ocean acidification impacts will be identified, including interaction effects with other physical, chemical and human sources of ecological stress.

UNESCO: Social and Human Sciences

Dr Mrazek told BBC News Online that it was possible that the stress associated with parental problems caused chemical changes in the body that had an effect on the function of genes thought to be linked to the development of asthma.

BBC: Parenting link to asthma

The aim of the mission, UN officials stress, is to find out whether chemical weapons have been used and not by whom.

BBC: Syria chemical weapons claims: UK and US tread cautiously