带电晕屏蔽管电晕线组的研究，就是在这种背景下应运而生的。
The study on corona wire group with corona shielding tube comes into being under this background.
介绍了抗紫外线功能性纺织品开发的背景和纳米材料的紫外线屏蔽机理及评价标准。
Thearticle introduces the background for developing UV-proof functional textiles, the UV-protection mechanism of nano- materials and related assessment criteria.
黑暗星云之所以显著，是因为它们屏蔽了背景恒星的光芒。
The dark nebulae stand out because they block out background stars.
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