形容词 nonexistent:

1. not having existence or being or actuality

nonfoodn.非食品nonadv.[拉]非；不是nonaffine deformability非仿射形变non-constant pressure非等压nonshock fluid pressure水压试验压力non noxious stimulation无害刺激Non-reasonable factor非理性因素noncommissioned officern.军士；士官Non-expandable gasket非膨胀型衬垫non-official language非官方语言nonallelic interactions非等位基因相互作用non-normal steel beam非标准钢梁