radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
例句
用作名词 (n.)
Ultraviolet rays can penetrate through clouds. 紫外线可以穿透云层。
Cat's urine glows under a black light. 猫尿在紫外线的照射下可以发光。
As melanin encounters UV light, it turns brown. 黑色素遭遇到紫外光后变成褐色。
Under ultraviolet rays, oxygen is photolysis, thus producing ozone. 空气中氧气在紫外光的照射下，发生光解作用，产生臭氧。
For other parts of the spectrum, such as the ultraviolet, satellites are necessary to see what objects in space are doing. 对波谱的另外一些部分，如紫外辐射，必须利用卫星才能知道是宇宙中什么天体产生的。
Infrared radiation and ultraviolet radiation is applied with lamps to relieve inflammation. 红外辐射和紫外辐射可用来缓解炎症。
美
