气象仪将大气现象的映像，如云，投射到一个圆顶内侧的一种光学装置 An optical device designed to project images of atmospheric phenomena, such as clouds, on the inside of a dome.
影像这样投射出的图像 An image so projected.
照相排版（法）通过在摄影卷上投射各种类型符号的影像来准备用于印刷的手稿，然后用其来制作印板 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.
