Italian words usually have the main stress on the penultimate syllable in the word.

意大利语单词的主重音通常在倒数第二个音节上。

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The statistical analysis shows that the intermediate main stress can generally make the maximum main stress increase 30%.

统计分析表明：中间主应力一般可使最大主应力的强度极限增大30%。

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The key of photoelastical stress analysis is separating main stress, but the methods which we have used before are complicated.

主应力分离是光弹性应力分析的关键问题，但已往所用的方法都比较繁琐。

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Exam pressures and family break-up were thought to be the main stress points, the questionnaire by the Association of Teachers and Lecturers found.

BBC: Pupils 'under greater pressure'

The main hormone produced during stress is cortisol, which causes aggression and and mood problems.

FORBES: Women Are Happier Than Men; Testosterone To Blame

Chief executive of the Teacher Support Network Patrick Nash said stress was "the main emotional state teachers report they feel".

BBC: NEWS | UK | Education | Many teachers 'stressed in class'