除了负的热膨胀效应，研究人员也发现了温度改变引起的材料多孔性的明显改变，因而这种多孔性就变得高度可控。
Besides negative thermal expansion, the researchers also found that changes in temperature lead to a significant variation in the porosity of the material, which is therefore highly controllable.
通过对光纤的弹光效应、光纤周期的伸缩、热光效应、热膨胀效应的分析得出了光纤光栅的应变灵敏度和温度灵敏度。
By analyzed the effects of fiber's spring, cycle flex, calorescence and the heat expand, the strain sensitivity and temperature sensitivity of FBG are obtained.
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