[电] three-gun color picture tube, tri-gun color picture tube

sān qiāng cǎi sè tú xiàng guǎn ㄙㄢ ㄑㄧㄤ ㄘㄞˇ ㄙㄜˋ ㄊㄨˊ ㄒㄧㄤˋ ㄍㄨㄢˇ