Schmitt W, Rossmannek W
Zentralbl Chir. 1978;103(9):589-602.
Bad projection of lantern slides impairs every paper. Causes are incorrect conception of the slide, insufficient projection. The conditions of optimal projection are discussed in detail (projector, screen, room-image factor, optics, lay out of slides).
灯片投影效果不佳会影响每一篇论文。原因包括对幻灯片的理解不正确、投影不足。详细讨论了最佳投影的条件（投影仪、屏幕、房间图像因素、光学器件、幻灯片布局）。
