The influence of nano-particles ferric oxide quantity to the performance properties of ultraviolet radiationshield nano - coatings.
讨论了纳米氧化铁的不同加入量对涂层抗紫外光性能的影响。
2
The absence of oxygen on other planets means that those planets lack an ozone shield to protect life forms against UV radiation.
其他行星上没有氧气，这意味着这些行星缺乏保护生命体免受紫外线辐射的臭氧层。
3
The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.