The aging effect of adhesive can be measured based on the time-temperature equivalence principle.

可以根据时温等效原理来衡量胶水长时间后的老化效应；

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In younger astronauts, Glenn said, the "aging" effect reverses itself when they return to Earth.

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Thus the total demographic effect of aging is attenuated by the absence of female workers in the older cohorts.

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This is the effect of aging population: millions more people will be eligible for Medicare, and healthcare costs grow as we get older.

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