concentration

concentration

名词 concentration:

(chemistry) the strength of a solution; number of molecules of a substance in a given volume (expressed as moles/cubic meter)

the spatial property of being crowded together

同义词：density, denseness, tightness, compactness

strengthening the amount of a substance in a unit amount of another substance (as of a solute in a mixture) by removing the other substance

increase in density

complete attention; intense mental effort

同义词：engrossment, absorption, immersion

bringing together military forces

great and constant diligence and attention

同义词：assiduity, assiduousness