NCRn.不需要碳(核的)NCabbr.免费(=no charge)abbr.不赊账(=no credit)abbr.(美国州名)北卡罗来纳(=North Carolina)NC technology数控技术NCprogramming数控编程NC prgramming数控编程NC maehinning数控加工nclear factor核转录子NC programmer数控编程ncy generator应急发电机NC processing数控加工NC enveloping数控包络NC flying saw数控飞锯机