资料来源 : pyDict

不,无,没有的否定,拒绝,反对,不许,禁止

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Nitric \Ni"tric\, a. [Cf. F. nitrique. See {Niter}.] (Chem.)
   Of, pertaining to, or containing, nitrogen; specifically,
   designating any one of those compounds in which, as
   contrasted with nitrous compounds, the element has a higher
   valence; as, nitric oxide; nitric acid.

   {Nitric acid}, a colorless or yellowish liquid obtained by
      distilling a nitrate with sulphuric acid. It is powerfully
      corrosive, being a strong acid, and in decomposition a
      strong oxidizer.

   {Nitric anhydride}, a white crystalline oxide of nitrogen
      ({N2O5}), called {nitric pentoxide}, and regarded as the
      anhydride of nitric acid.

   {Nitric oxide}, a colorless poisous gas ({NO}) obtained by
      treating nitric acid with copper. On contact with the air
      or with oxygen, it becomes reddish brown from the
      formation of nitric dioxide or peroxide.

Nitroso- \Ni*tro"so-\
   (? or ?). (Chem.) A prefix (also used adjectively)
   designating the group or radical {NO}, called the nitroso
   group, or its compounds.

Nitrosyl \Ni*tro"syl\, n. [Nitroso- + -yl.] (Chem.)
   the radical {NO}, called also the {nitroso group}. The term
   is sometimes loosely used to designate certain nitro
   compounds; as, nitrosyl sulphuric acid. Used also
   adjectively.

资料来源 : WordNet®

no
     adv 1: referring to the degree to which a certain quality is
            present; "he was no heavier than a child" [syn: {no
            more}]
     2: not in any degree or manner; not at all; "he is no better
        today"
     3: used to express refusal or denial or disagreement etc or
        especially to emphasize a negative statement; "no, you are
        wrong"
     [also: {noes} (pl)]

no
     adj : quantifier; used with either mass nouns or plural count
           nouns for indicating a complete or almost complete lack
           or zero quantity of; "we have no bananas"; "no eggs
           left and no money to buy any"; "have you no decency?";
           "did it with no help"; "I'll get you there in no time"
           [syn: {no(a)}] [ant: {all(a)}, {some(a)}]
     [also: {noes} (pl)]

no
     n 1: a negative; "his no was loud and clear" [ant: {yes}]
     2: a radioactive transuranic element synthesized by bombarding
        curium with carbon ions; 7 isotopes are known [syn: {nobelium},
         {atomic number 102}]
     [also: {noes} (pl)]

资料来源 : Free On-Line Dictionary of Computing

no
     
         The {country code} for Norway.
     
        (1999-01-27)