[电] in-phase portion of the chromin-ance signal
sè pín xùn hào de tóng xiāng bù fèn ㄙㄜˋ ㄆㄧㄣˊ ㄒㄩㄣˋ ㄏㄠˋ ㄉㄜ˙ ㄊㄨㄥˊ ㄒㄧㄤ ㄅㄨˋ ㄈㄣˋ