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zeng qiang di tu zhu ji yu bao mo zhan fu li shi yan
Author(s): 
Pages: 60
Year: Issue:  4
Journal: Hydrogeology and Engineering Geology

Keyword:  地图注记制图作业制图工作成图质量绘图聚酯薄膜试验符号描图纸粘贴;
Abstract: <正> 聚酯薄膜是一种理想的制图材料,目前已广泛运用于制图工作中。但由于薄膜表面很光滑、不吸水、不易干,因此,在薄膜清绘图上用乳胶粘贴的注记、符号牢固程度差,在制图作业和搬运中,粘贴的注记,符号容易挠起和脱落,严重地影响成图质量。而在裱板图纸或硫酸透明描图纸上用乳胶粘贴的注记符号却很牢固。根据这个原理,我们进行了在乳胶液中加入适量的硫酸,以增强乳胶液与薄膜粘着力的试验。经过一系列的试验和实际作业,较好地解决了在
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