nonanen.[化]壬烷nonadv.[拉]非；不是non-volatility不挥发性non-mainstream非主流nontrivial bound非无效界non-persistent不安定的nonstaging drive非阶梯驱动器,隔行驱动non-resistancen.不抵抗；不抵抗主义non-slip tread防滑梯级non - toxicity无毒nonprepositional无前置词的nonoxidizabilityn.不可氧化性