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frost line |
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frost line [′frȯst ‚līn] (geology) The maximum depth of frozen ground during the winter. The lower limit of the permafrost. (materials) In polyethylene film extrusion, a ring-shaped area with a frosty appearance at the point where the film reaches its final diameter. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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One big question is whether capacitance gauges mounted beyond the nip can control thickness as well as can a gauge on the bubble just above the frost line. These sanitary devices work much the same way as a weep hole device in that when they are shut off, the water in the riser drains down and out a hole located below the frost line to prevent freezing. Unlike traditional ramps, these don't require a permanent frost footing where holes are dug and posts are set below the frost line. |
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