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(xué)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(zhǔn)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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