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 (電眡圖像)測試卡 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 測試圖案（電眡台播放的圖片或圖案，用於檢測或改進圖像質量） 返回 test card