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聚酯薄膜(简称薄膜)具有透明度好、伸缩性小、质量轻、强度大等优点。用于大比例尺地形图的测绘和复制,可以简化成图过程,缩短成图周期,保证成图质量,保存携带方便,适合战备需要。该处从1967年开始应用薄膜,现测绘地形图已基本上全部使用,并逐渐在用于复制工序。(常用的薄膜为常州、上海的产品,厚度0.07毫米和0.1毫米两种。)实践证明,薄膜成图是符合多快好省的
Polyester film (referred to as film) with good transparency, scalability, light weight, strength and so on. For mapping and copying of large-scale topographic maps, it can simplify the mapping process, shorten the mapping cycle, ensure the mapping quality, save and carry conveniently, and suit for war preparation. Since 1967, the film has been applied to the area. Now the topographic maps have been basically used all over the world and are gradually being used in the replication process. (Commonly used films for the Changzhou, Shanghai products, the thickness of 0.07 mm and 0.1 mm two.) Practice has proved that the film is in line with the more profitable map