This understanding is very wrong, in theory, no filler layer is equal to no radiation surface.

这种认识是非常错误的，从理论上说，不设填充层就等于没有辐射面。

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Finally it introduces the active admittance method and three designed equations which are used to design the radiation surface.

最后阐述了有源导纳法，以及设计辐射阵面的三个设计方程。

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Since the accumulator is one of the most important component with the largest sound radiation surface area in rotary compressor, its noise contribution may be substantial.

储液器是旋转式压缩机上的一个重要部件，由于它具有较大的声辐射面积，因此它的噪声贡献量不容忽视。

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Since cosmic radiation alters surface composition, Curiosity can drill into rock to extract pristine material from below.

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But over time, the white paint would be reflecting light and other electromagnetic radiation from its surface.

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Because of abundant solar ultraviolet radiation at the surface, organic molecules might not be preserved as well as clay minerals.

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