n/a
Na 1
Na 2
nA
NA
n/a
NA
Na
Chem. Symbol.
单词 | n/a | ||||||||||||
释义 | n/aNa 1Na 2nANAn/aNANaChem. Symbol. n/aN.A.N/AN/A(1) See numerical aperture.(2) (Not Applicable) A commonly used abbreviation in the English language for entering nothing in a form or table field because no data are relevant to the situation. N/AN/A(1) See numerical aperture.(2) (Not Applicable) A commonly used abbreviation in the English language for entering nothing in a form or table field because no data are relevant to the situation. See na N/A
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