【电】 validity check
affirm; countersign; notarize; validate; acknowledgement; affirmance
identification; verification
【计】 ACK; ACK0; ACK1; acknowledgement; AK; confirm; confirm on; confirmation
【医】 affirmation
【经】 ratify; recognize
check; check against; check up
【医】 check
【经】 check; checking; collate; control; verify