Following an estimated GNP contraction of 2% in the 2007/08 fiscal year, the Economist Intelligence Unit estimates the economy will contract by another 3% in 2008/09.
据估计，波多黎各GNP在07-08财年下滑了2%，据经济学人信息部估计，08-09财年该国GNP将在07-08财年基础上再度缩水3%。
So while we still have expansion and contraction, all of the components expand and contract at the same rate relative to one another.
于是哪怕仍存在热胀冷缩的现象，所有的部件发生这一现象的比率都是相同的。
Temperature contraction coefficient is a parameter for material expansion and contract property when temperature becomes high ot low.
温度收缩系数是反映材料热胀冷缩特性的参数，贫砼基层材料的温缩特性又直接影响到温度应力。
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