| 摘要 |
A package is adapted for assembly to form a panel unit to be deployed on a body of water to alter heat transfer to or from the water or to block evaporation. The package includes: (a) multiple frame sections adapted to be coupled together in end-to-end relation to provide a loop-shaped frame bounding an open zone, and (b) a flexible sheet sized for connection to the loop-shaped frame so as to extend crosswise of that zone.
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