[电] aperture mask tricolor picture tube

kǒng píng sān sè xiǎn xiàng guǎn ㄎㄨㄥˇ ㄆㄧㄥˊ ㄙㄢ ㄙㄜˋ ㄒㄧㄢˇ ㄒㄧㄤˋ ㄍㄨㄢˇ