QJ 589-1981 X(CX，2CX)型插座盖帽

QJ 589-1981 "X(CX, 2CX) type socket cover cap" (literally meaning "X socket with CX and 2CX parts") would typically refer to a cap for a socket that has CX and 2CX components. However, it's important to note that this term may vary depending on the specific context and usage