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1.序言随着胶片应用范围的扩大,对尺寸稳定性的要求也越来越高,尤其七十年代后航天遥感技术蓬勃发展,把用于军事目的的侦察卫星转用于地学研究上。利用气象卫星,宇宙飞船,地球资源卫星等先进的侦察工具,来探测自然资源的质及量的分布,在经济建设中起到不可忽视的作用。胶片作为侦察手段,广泛地被应用于各领域。对航天遥感部门来说,被摄物缩小倍率更大,其微小的尺
1. Preamble With the expanding application of film, the demand for dimensional stability is also getting higher and higher, especially since the seventies after the rapid development of space remote sensing technology, the use of reconnaissance satellites for military purposes in geosciences. The use of meteorological satellites, spacecraft, earth resources satellites and other advanced reconnaissance tools to detect the nature and quantity of natural resources distribution, play an important role in economic construction. Film as a scout means is widely used in various fields. For the space remote sensing department, the subject reduced the magnification greater, its tiny ruler