| 摘要 |
An insulating, substantially rectilinear building panel comprised of a top portion, a bottom portion, and at least three chambers containing interior surfaces disposed between said top portion and said bottom portion. The pressure within each of such chambers is less than about 100 millimeters of mercury; and each of the interior surfaces has a reflectivity of least about 80 percent. Each of the chambers contains a top portion and a bottom portion, and each such portion has at least two legs, each of which ends in a rounded surface. The two portions of each chamber contact each other at their respective rounded portions.
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