Last, the temperature contractioncoefficient and dry shrinkage coefficient of porous concrete are advanced.
得出多孔混凝土的温缩系数和干缩系数。
2
Temperature contractioncoefficient 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。
3
Because of the always-outdated statistical data in the calculation of GDP contractioncoefficient currently, we still adopt CPI indicators to measure the degree of inflation.