NOEC无可见影响浓度noadv.不adj.没有；不是；禁止n.否定的回答；投反对票者No recourse was left.无可依赖了。Nocardia rudropertincta[医] 珠红诺卡氏菌No receiver no thief.无窝主就无盗贼。no-confidence motions不信任动议No Holly For Miss QuinnNocardia transvaalensis[医] 南非诺卡氏菌No Further Consequences没有进一步的后果no resource reservation无资源预留no point in complaining抱怨也无用no read-while-write非同时读写（NRWW）区