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单词 UVB
释义
UVB (yvēbē)
n.
Ultraviolet radiation that is found in sunlight, has a wavelength between 290 and 320 nanometers, and can cause damage to the skin including sunburn, tanning, premature aging, and cancer.

[u(ltra)v(iolet) B (the letter B being used to designate the second of the categories based on wavelength in which ultraviolet radiation is classified).]
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更新时间:2025/1/7 10:59:59