concen-tration
英
['kɒnsntr'eɪʃn]
美
['kɒnsntr'eɪʃn]
-
名词 concentration:
-
the strength of a solution; number of molecules of a substance in a given volume
-
the spatial property of being crowded together
-
strengthening the concentration (as of a solute in a mixture) by removing diluting material
-
increase in density
-
complete attention; intense mental effort
-
bringing together military forces
-
great and constant diligence and attention
-
以上内容独家创作,受著作权保护,侵权必究
海词词典,十七年品牌