测试图形卡 meaning in English

test pattern

Test patterns for micrography ; test exposures made to establish the conditions for microfilming of drawings
缩微照相用测试图形卡.第20部分:确定图纸缩微摄影条
Test patterns for micrography ; test exposures made to establish the conditions for microfilming of printed documents , literature and newspapers
缩微照相用测试图形卡.第21部分:确定印刷文件文献