1. 氣象儀將大氣現(xiàn)象的映像，如云，投射到一個圓頂內(nèi)側(cè)的一種光學裝置
   An optical device designed to project images of atmospheric phenomena, such as clouds, on the inside of a dome.
2. 影像這樣投射出的圖像
   An image so projected.
3. 照相排版（法）通過在攝影卷上投射各種類型符號的影像來準備用于印刷的手稿，然后用其來制作印板
   The preparation of manuscript for printing by the projection of images of type characters on photographic film, which is then used to make printing plates.

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