柯林斯词典test card (also test pattern) 1. N a complex pattern used to test the characteristics of a television transmission system (电视图像)测试卡 返回 test card剑桥词典a picture or pattern that was broadcast in the past so that the quality of the television picture received could be examined and improved if necessary by using the controls on the equipment 测试图案（电视台播放的图片或图案，用于检测或改进图像质量） 返回 test card