nonvotern.不投票者；投票弃权者nonadv.[拉]非；不是Noninvasive positive -pressure ventilation无创正压通气nonautonomous nonlinear difference equations非自治非线性差分方程non-linear dynamic time-history analysis非线性动力时程分析nontraditional ultra - precision machining超精密特种加工non-parametric polynomial density estimate非参数多项式密度估计Non-bacterial regional lymphadenitis virus非细菌区淋巴腺炎病毒, 猫抓痒病病毒Non- Litigation Administrative Enforcement非诉行政执行nondepolarizing neuromuscular blocking agent非去极化神经肌肉阻断剂non-equilibrium grain boundary segregation非平衡偏聚NON-LINEAR ELECTRON MAGNETIC-DRIFT WAVES非线性电子磁漂移波