| 释义 |
紫外线zǐwàixiàn波长比可见光短的电磁波,波长约0.39—0.04微米,在光谱上位于紫色光的外侧。可使磷光和荧光物质发光,能透过空气,不易穿过玻璃,有杀菌能力,对眼睛有伤害作用。用于治疗皮肤病、矿工的保健以及消毒等。{ultraviolet ray; electromagnetic wave on the outer side of purple light on the spectrum, whose wavelength (about 0.39-0.04 microns) is shorter than visible light, which can cause phosphorescent and fluorescent substances to emit light, able to penetrate the air but not to pass through glass easily, and which kills bacteria but is harmful to the eyes, oft. applied in the treatment of skin diseases, miners' health care, sterilization, etc.;}也叫also紫外光{zǐwàiguāng}。 |