| calcium carbonate |
The compound from which the nacreous shell lining and crystalline calcite layer of an oyster's shell are made.
출처: www.karipearls.com/pearl-glossary.html
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|---|---|
| calcium |
A mineral that is the primary component of hydroxyapatite. It is also vital to many physical processes, including heart rate, blood pressure, muscle contractions, the transmission of nerve signals, and the regulation of internal organs.
출처: lesann.tripod.com/glossary.htm
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| calcium carbonate |
The main mineral component of a pearl's nacre, or outer layer. Mostly calcite and aragonite.
출처: www.altobelli.com/html/gemstone_glossary.html
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| calcium |
is the body's most plentiful a mineral, is essential for strong teeth and bones and for muscle and nerve function. Studies suggest that Calcium supplements, if taken regularly, help prevent osteoporosis by reducing bone loss.
출처: biotrexvitamins.com/vitamins.shtml
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| calcium carbonate |
Also known as limestone, this compound is the major structural material in eggshells.
출처: www.royalalbertamuseum.ca/vexhibit/eggs/vexhome/gl...
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