Model ZQJ-254 ultraviolet Intensity meter can measure the radiation dose of ultraviolet rays in the various enviroment.
254紫外线强度检测仪能测量各种环境中的紫外线辐照剂量。
Quantum dots are semiconductor nanostructures, 25 billionths of a meter in diameter, which can confine electrons in three dimensions and emit light when exposed to ultraviolet radiation.
量子点是一种直径为25纳米的半导体物体，当有紫外线的照射时，它能把电子限制在三维空间并产生光源。
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