【计】 primary user disk
advocate; direct; host; indicate; main; owner; person or party concerned
【机】 master
consumer; user
【计】 SUB; U
【经】 consumer; consumer buyer; ultimate purchaser; user
check; game; set; tray
【计】 spool
【医】 disc; disci; disco-; discus; disk; orbiculus; pan; tray