GD can be excited by light from 300 nm to 400 nm, and emit 450-500 nm light. The decay period was above 12 hours.是什么意思_GD can be excited by light from 300 nm to 400 nm, and emit 450-500 nm light. The decay period was above 12 hours.在线翻译_英语_读音_用法_例句