两侧百叶窗式通风孔，便于空气流通。
为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；
In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one.
实验证明百叶窗式纳米亲水翅片要比常规的平板型翅片提高100%以上的换热效果。
Experiments proved that the heat transfer efficiency of the louvered fin with nm hydrophilic film is 100% higher than the conventional straight fin.
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