[计] operator interface control block

cāo zuò yuán jiē kǒu kòng zhì kuài ㄘㄠ ㄗㄨㄛˋ ㄩㄢˊ ㄐㄧㄝ ㄎㄡˇ ㄎㄨㄥˋ ㄓˋ ㄎㄨㄞˋ