Fourth, anti-ultraviolet radiation.
畁第四，抗紫外线。
Exposing too much to ultraviolet radiation is not allowed.
切勿过度照射紫外线。
Ultraviolet radiation from the hot star powers the nebular glow.
热恒星的紫外辐射使星云发光。
"Ultraviolet radiation can neither be seen nor felt," the study noted.
“紫外辐射式看不到的也感觉不到的”，这项研究指出。
Sunburn is literally a burn on your skin. It is a burn from ultraviolet radiation.
从字面意思理解，晒伤就是皮肤上的灼伤，是来源于紫外线辐射的灼伤。
They may also be able to use infrared or ultraviolet radiation to drive photosynthesis.
他们也可能只用红外光或者紫外光进行光合作用。
Because less then 5% of the sun spectrum is ultraviolet radiation and 43% is visible light.
而太阳光谱中紫外光区占不到5%，可见光区则占43%。
The flexural and tensile strength can hold 99% under ultraviolet light radiation for one month.
紫外光照射一个月，修补材料的强度可以保持99%；
The flexural and tensile strength can hold 99% under ultraviolet light radiation for one month.
紫外光照射一个月，修补材料的强度可以保持99%；
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