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依据植物光合作用生成有机物淀粉遇碘变蓝色的原理以及光线在胶卷底片各部分透光程度的不同,可以将照片巧妙地印在植物的叶片上。
According to the photosynthesis of organic matter produced by the iodine turns blue organic principle and light film in various parts of the transparency of the different levels of photos can be subtly printed on the leaves of plants.