[电] bidirrectional triode thyristor

shuāng xiàng sān jí zhá liú diàn jīng tǐ ㄕㄨㄤ ㄒㄧㄤˋ ㄙㄢ ㄐㄧˊ ㄓㄚˊ ㄌㄧㄡˊ ㄉㄧㄢˋ ㄐㄧㄥ ㄊㄧˇ