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1. The material has a high gross-heat conductivity, which makes it suitable for use in heating systems.
这种材料具有高的总热导率，因此适合用于加热系统。
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2. The scientist used the data to calculate the gross-heat conductivity of the material.
科学家利用这些数据计算了材料的总热导率。
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3. The engineer designed a new heat exchanger with a higher gross-heat conductivity to improveefficiency.
工程师设计了一种新型的热交换器，具有更高的总热导率以提高效率。