单词 | UVA |
释义 | UVA (y′vē′ā) n. Ultraviolet radiation that is found in sunlight, has a wavelength between 320 and 400 nanometers, and can cause damage to the skin after long-term exposure, including premature aging and cancer. [u(ltra)v(iolet) A (the letter A being used to designate the first of the categories based on wavelength in which ultraviolet radiation is classified).] |
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