ultraviolet - Radiation from the sun, visible - Radiation which helps us to see things, radio - rioda, infrared - Radiation which has a warming effect, microwave - Radiation used in a kitchen appliance, skin - Type of cancer caused by UV radiation, gamma - gmama, d - Type of vitamin made using UV radiation,

EM spectrum

由 匿名
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？