| 摘要 |
This invention is a unique cover for swimming pools or the like manufactured in easily handleable small segments which fit together on matching sides when floated upon water and as particularly characterized by utilizing a heat retaining material on the side facing the water, with a heat admitting cover on the other side with a space formed between the two to provide an insulating space which passes and amplifies heat from the atmosphere into the water while blocking the escape of heat from the water.
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