研究人员们怀疑，冬季的低温、潮湿、紫外线等条件会增加病毒的稳定性，缩在屋子里的人们也一样会方便它的传播。
Researchers suspect that lower temperature, humidity, and ultraviolet light during the winter may increase viral stability; people huddling indoors may facilitate spread as well.
但也存在某些不足，如改性沥青加工过程中的温度老化、贮存稳定性及在紫外线作用下降解加速材料老化等问题。
However, some drawbacks exist, such as high temperature agi ng in process of modification, low storage stability and degradation acceleration under ultraviolet.
结果：发现这些因素均影响水合氯醛的稳定性，其中以紫外线照射及碱性物质影响最大。
Results: it was found that all of these factors had influence on the stability of chloral hydrate.
具有良好的化学稳定性及耐热、耐臭氧、耐酸碱、耐紫外线、耐候性等性能。
It has good chemical stability and resistance to heat, ozone, acid and alkali, UV ray, and weather, etc.
该产品具有优良的透明度，韧性，耐化学性，表面硬度，抗磨损，尺寸稳定性，和抗紫外线等特点。
The product exhibits excellent clarity, toughness, chemical resistance, surface hardness, mar resistance, dimensional stability, and UV light screening properties.
耐热性和热稳定性是所有合成纤维织物中最好的，COOLSOFTTM是在原有的耐日光性和耐热性的基础上经过改良而具有凉感和抗紫外线功能。
With best heat resistance and thermal stability of synthetic fabric, COOLSOFTTM is also improved with cool sense of touch and anti-UV.
它即使长期暴露于紫外线、强光、潮湿、寒热等恶劣环境下，仍能保持其颜色和物理性能的稳定性。
It even if long-term exposure to ultraviolet light, wet and cold, such harsh environment, still can maintain its color and physical properties of the stability.
水相法氯化橡胶是一种高硬度、粉末状的热塑性树脂，它具有优良的耐候性、附着性、化学稳定性、耐盐水性、防紫外线等性能。
Water-based Chlorinated Rubber is a high hardness of the thermoplastic resin powder, it has excellent weather resistance, adhesion, chemical stability, salt water, UV and other properties.
它具有优异的抗紫外线性能，优良的热稳定性，这是适合汽车内饰应用。
It has excellent UV resistance, excellent thermal stability and it is well suited for automotive interior applications.
它具有优异的抗紫外线性能，优良的热稳定性，以及适合汽车内饰应用。
It has excellent UV resistance, excellent thermal stability and and is well suited for automotive interior applications.
它具有优异的抗紫外线性能，优良的热稳定性，以及适合汽车内饰应用。
It has excellent UV resistance, excellent thermal stability and and is well suited for automotive interior applications.
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