... 普通“无效”字样网屏Void Pantograph Screen 微缩印刷Microprinting 背面安全光屏Backer Security Screen ...
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以上来源于: WordNet
N a microphotograph reproduced on paper and read by a magnifying device. It is used in order to reduce the size of large books, etc (用放大器阅读的)缩微印刷品
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