concentration
- n. 浓度；集中；浓缩；专心；集合
英英释意
- 1. the strength of a solution; number of molecules of a substance in a given volume (expressed as moles/cubic meter)
- 2. the spatial property of being crowded together
- 3. strengthening the concentration (as of a solute in a mixture) by removing extraneous material
- 4. increase in density
- 5. complete attention; intense mental effort
- 6. bringing together military forces
- 7. great and constant diligence and attention