network-chain molar mass,  |  | network-chain molar mass,  |  |
neutron number,
|  | neutron number,
|  |
nominal linear flow,
in chromatography |  | nominal linear flow,
in chromatography |  |
normal stress,
|  | normal stress,
|  |
number concentration, ,  |  | number concentration, ,  |  |
|  | number concentration, ,  |  |
number density,
|  | number density,
|  |
number flow rate,
|  | number flow rate,
|  |
number of entities,  |  | number of entities,  |  |