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the impermeable material, such as cement grout bentonite, or puddling clay placed in the annular space between the borehole wall and the casing of a water well to prevent the downhole movement of surface water or the vertical mixing of artestian waters.
출처: www.texaswater.org/water/facts/glossary/glossary7....
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| seal |
Synthetic gaskets that seal the joints between parts of the case and keep out the wet.
출처: www.findwatches.co.uk/terminology.php
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| seal |
Metal strip and lead fastener used for locking freight car or truck doors. Seals are numbered for record purposes.
출처: www.oocl.com/glossary/m_to_s.htm
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| seal |
A metal wire and numbered disc that is used to seal locks on vehicle or container doors to deter and monitor tampering with shipments in holding areas or in transit.
출처: www.rcaam.org/educate/glos-stu.htm
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| seal |
any material or device which prevents or controls the passage of matter across the separable members of a mechanical assembly.
출처: www.staffgasket.com/glossary.html
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