【计】 unnumbered acknowledge
naught; nonexistence; not; nothing; without; lack; zero
【医】 a-; leipo-; lipo-; non-
no.; serial number
【计】 N
【经】 codification
affirm; countersign; notarize; validate; acknowledgement; affirmance
identification; verification
【计】 ACK; ACK0; ACK1; acknowledgement; AK; confirm; confirm on; confirmation
【医】 affirmation
【经】 ratify; recognize