There is common physical relation among solar cells, photochemical convertion and selective radiation heat convertion detectors.

在太阳能电池、光化学转换和选择性的光热转换接收器之间存在着物理学的共同联系。

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This paper is based on the research work of the Vega Information Grid, and investigate the full lifecycle of information grid object-effective relation? virtual relation and physical relation.

文章结合中科院计算所织女星信息网格的工作，对信息网格客体——有效关系、虚拟关系和物理关系，运用全生命周期的方法进行了研究。

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Married people are not ever tender with each other, you will notice: if they are mutually civil it is much: and physical contacts apart, their relation is that of a very moderate intimacy.

结婚的双方彼此之间根本谈不上温柔，你会发现：如果他们相互之间客客气气，那么往往是这样：除了身体上的接触外，他们的关系是一种非常平淡的亲情关系。

youdao

"Once a woman became overweight or obese, there was no relation between physical activity and weight change among these women."

VOA: standard.2010.03.30