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.
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。
Instead of expanding when heated — as is normally the case — the material contracts, a phenomenon known as negative thermal expansion.
与正常材料不同的是，当加热时，该材料不是膨胀，而是收缩，表现出负的热膨胀现象。
The expansion of the income gap has both a positive influence and a negative effect.
居民收入差距扩大对我国社会经济既有积极影响，也有消极影响。
Objective to observe the quantity of drainage fluid after operation and to evaluate the application of negative pressure drainage in skin soft tissue expansion.
目的通过术后引流量的观察，对负压引流在皮肤软组织扩张术中的应用作出评价。
The first generalization is that the expansion of solutions of equations is generalized to negative exponent, and negative exponential elliptic function solutions are obtained.
第一种推广为，将方程解的展开式扩展到负指数，可以求得方程的负指数的椭圆函数解。
Nevertheless, this rule has cast negative impacts upon functioning of the insurance, with regard to its expansion of coverage, financing equity, benefit sustainability and enrollment portability.
可是这一规则对医保覆盖面拓展、筹资公平性、给付可持续性和可携带性，带来了负面影响。
The invention provides a negative thermal expansion alloy of Nickel-Titanium-Niobium which has negative thermal expansion characteristics in a wider temperature range and a preparation method.
提供一种在较宽温度区间具有负热膨胀特性的镍钛铌负热膨胀合金及其制备方法。
Based on the CAPM, a model is build to reflect the expansion effect of negative interest rates to prices of the real estate industry, which is proved to be true in the theoretical analysis.
基于资本资产定价模型构建了负利率与房地产价格关系模型，实证结果支持了负利率对房地产价格所产生的扩张效应。
Inflationary pressure has started to show a negative impact on service expansion.
通胀压力已经开始显现出对服务扩展产生负面影响。
A negative thermal expansion material of yttrium tungstate was synthesized by rapid solidification with a CO2 laser.
用二氧化碳激光快速凝固技术合成了负热膨胀材料钨酸钇。
A negative thermal expansion material of yttrium tungstate was synthesized by rapid solidification with a CO2 laser.
用二氧化碳激光快速凝固技术合成了负热膨胀材料钨酸钇。
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