| black death |
bubonic plague. A disease prevalent in the middle ages, buth still occurring in third world ountries, transmitted by fleas from rats.
출처: freepages.genealogy.rootsweb.com/~randyj2222/gendi...
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|---|---|
| black lung |
a disease from breathing coal dust
출처: freepages.genealogy.rootsweb.com/~randyj2222/gendi...
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| black damp |
A term generally applied to carbon dioxide. Strictly speaking, it is a mixture of carbon dioxide and nitrogen. It is also applied to an atmosphere depleted of oxygen, rather than having an excess of carbon dioxide.
출처: www.netl.doe.gov/coal/Coal%20Primer/glossary.html
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| black damp |
A mine gas largely carbon dioxide which is dangerous to life by causing suffocation; an oxygen deficiency.
출처: www.readinganthracite.com/glossary.htm
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| blackhead |
Local name given to bank of carbonaceous refuse which occurs at or near the top of a coal seam.
출처: www.readinganthracite.com/glossary.htm
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