In addition, the lighting load, optimal installation Angle, the number of row and column, the space between front and back of PV array have been calculated in detail.

此外，对照明负荷、最佳安装角度、前后排间距及方阵排、列数都进行了详细的计算。

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While wireless headset manufacturers battle one another to shrink their wares until they completely disappear into your ear canal, organizers of the Switched-On London lighting festival (not named, unfortunately, after the excellent column by NPD's Ross Rubin) have taken the opposite tack: for one week in February, they've transformed the famous Tower Bridge into the world's largest Bluetooth device (narrowly edging out the PS3).

ENGADGET: This week only, London's Tower Bridge is the world's largest Bluetooth device