不归零（制）

nonreturn-to-zero change on one\nNRZ1\n计

nonreturn-to-reference recording【计】;nonreturn-to-zero recording【计】

nonreturn-to-zero mark recording【计】

nonreturn-to-zero level【计】

nonreturn-to-zero in recording of analog function【计】

nonreturn-to-zero change on one recording【计】

nonreturn-to-zero change【计】

nonreturn-to-zero change recording【计】