nonwhiteadj.非白人的n.非白人nonadv.[拉]非；不是non-performance indexes非业绩指标non - linear regression非线性回归non-assimilation system非同化系统non-uniformity sampling非均匀采样non-pricing competition非价格竞争non-substitution clause不得替代条款non-headed construction非中心结构non-structural measures非工程措施non-determination fault不确定性故障non-standard equipments非标设备