| diffusion |
The spread of people, ideas, technology and products between places.
출처: www.yumaed.org/kofahigh/Vocabulary/SocialStudies/S...
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| diffusion |
The movement of individual molecules through a material. The movement occurs because of concentration gradients and thermal gradients, independent of airflow.
출처: www.buildingscience.com/resources/glossary.htm
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| diffusion |
Diffusion is a method that is occasionally used on sapphires. During treatment, a colorless sapphire is coated with a compound of titanium and oxide and is exposed to heat. This enhances and/or changes the color of the stone and generally does not require special follow-up treatments.
출처: www.szul.com/services_policies/terms.asp
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