求翻译：作品背景（国内外相关研究现状）、设计制作中解决的关键技术问题的描述、作品实物或实物模型的照片、创新特色、预计应用前景等]、参考文献。可不加封面。是什么意思？

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The work background (domestic and foreign correlation research present situation), in the design manufacture solves key technologies question description, work or working model picture, innovation characteristic, estimate application prospect in kind and so on], reference.But does not seal the surfa

Work background (relevant research situation at home and abroad), designed by description, key to solve technical problems in work photos of real or physical models, innovative features, the estimated application prospects], reference literature. Without a cover page.