| crystalline lens |
helps focus the light onto the retina.
출처: www.douglaswilson.org/ocular_definitions.html
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|---|---|
| crystal |
The tranparent cover on the watch face made of glass crystal, synthetic sapphire or plastic.
출처: www.westime.net/terms.htm
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| crystalline |
of or as clear as crystal
출처: wells.entirety.ca/glossary.htm
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| crystal |
refers to transparent or translucent opal where the colours are sharp and visible below the surface.
출처: www.costellos.com.au/opals/glossary.html
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| crystal |
The term crystal refers to glass that contains lead, an addition to the recipe for glass discovered in the 17th century. Using lead oxide rather than the more traditional soda produced glass that was heavier and more lustrous; it was also heavier, contained less bubbles and was ideal for cutting. Lead is also the ingredient that gives glass it's 'ping' - a sound not heard in everyday glassware.
출처: www.caroadshow.org/glossary.htm
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