concentration (EN)

名詞

名詞 “concentration”

1. 集中
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   She needed complete silence to maintain her concentration while studying for the exam.
2. 濃度（混合物や溶液に含まれる物質の量）
   The scientists measured the concentration of pollutants in the river water.
3. 濃縮
   The factory specializes in the concentration of fruit juices to create thicker syrups.
4. 集積
   There was a concentration of birds near the lake during migration season.
5. 専攻
   Her concentration in university was international relations within the political science department.
6. 神経衰弱（ゲーム）
   The children enjoyed playing concentration on rainy days.
7. 選鉱（鉱業で、鉱石から不要な物質を除去して貴重な鉱物の割合を高めるプロセス）
   The new technology improved the concentration of silver in the extracted ore.