| 摘要 |
A cover sheet is provided with pairs of back-to-back Velcro strips, one being of the male variety and the other being of a female variety. The pairs are provided symmetrically about the sheet and extend from positions adjacent the periphery thereof towards the center of the sheet. The strips on one side are preferably all of the same type, female say, and the strips on the other are of the opposite type. The strips facilitate securing the sheets about objects or to each other to form enlarged sheets.
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