柯林斯詞典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劍橋詞典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（電眡臺(tái)播放的圖片或圖案，用於檢測或改進(jìn)圖像質(zhì)量） 返回 test card