Ceiling hanging down lamp 天花板吊下的灯
halogen down lamp 卤钨筒灯
turn-down lamp 变光灯泡
round down lamp 圆形筒灯
Down Lamp Series 筒灯系列
LED Down lamp series 筒灯系列
It's the problem that sometimes people knock over an oil lamp in their home and they burn their own house down.
有时候会出现这种问题,一个人把自己家里的油灯弄翻了,然后把自己的房子点着了
So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.
如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级,然后它会掉回,到低能级,它就会释放,一个新的波长的光,这个光是可见的。
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