concentration

英 [ˌkɒnsnˈtreɪʃn]

美 [ˌkɑːnsnˈtreɪʃn]

n.  专心; 专注; 关注; 重视; 集中; 聚集

复数：concentrations　

CET4CET6考研IELTSTEM4TEM8化学

Oxford 3000 / Collins.3 / BNC.1564 / COCA.2752

牛津词典

noun

• 专心；专注
  the ability to direct all your effort and attention on one thing, without thinking of other things
  1. This book requires a great deal of concentration.
     这本书需要全神贯注才能读懂。
  2. Tiredness affects your powers of concentration.
     疲劳影响注意力的集中。
• 关注；重视
  the process of people directing effort and attention on a particular thing
  1. a need for greater concentration on environmental issues
     更加关注环境问题的必要性
• 集中；聚集
  a lot of sth in one place
  1. a concentration of industry in the north of the country
     这个国家的工业在北部的集中
• 浓度；含量
  the amount of a substance in a liquid or in another substance
  1. glucose concentrations in the blood
     血液中的葡萄糖含量

柯林斯词典

• N-UNCOUNT 全神贯注;专心;专注
  Concentrationon something involves giving all your attention to it.
  1. Neal kept interrupting, breaking my concentration...
     尼尔不停地打断我，使得我无法集中注意力。
  2. We lacked concentration and it cost us the goal and the game.
     我们注意力不够集中，结果丢了球，输了比赛。
• N-VAR 集中;汇集
  Aconcentration ofsomething is a large amount of it or large numbers of it in a small area.
  1. The area has one of the world's greatest concentrations of wildlife...
     这个地区是世界上野生动物最为密集的区域之一。
  2. There's been too much concentration of power in the hands of central authorities.
     权力一直过多地集中在中央机构手中。
• N-VAR 浓度
  Theconcentration ofa substance is the proportion of essential ingredients or substances in it.
  1. pH is a measure of the concentration of free hydrogen atoms in a solution...
     pH值是测试溶液中自由氢原子浓度的单位。
  2. The latest data showed that global ozone concentrations had dropped several per cent over the last decade.
     最新数据显示，过去10年来全球臭氧的浓度降低了几个百分点。

英英释义

noun

• strengthening the concentration (as of a solute in a mixture) by removing diluting material
• bringing together military forces
• great and constant diligence and attention
  Synonym:assiduityassiduousness
• the strength of a solution
• the spatial property of being crowded together
  Synonym:densitydensenesstightnesscompactness
• complete attention
  Synonym:engrossmentabsorptionimmersion
• increase in density

双语例句

• You solve for the steady state concentration.
  你解决了稳态浓度。
• I knew that concentration was the first requirement for learning.
  我知道专心致志是学习的首要条件。
• She wrinkled her brows in concentration.
  她蹙额皱眉，陷入沉思。
• Then the absorbance is calculated as concentration of AQ from working curve.
  最后，根据工作曲线将吸光度转换成蒽醌浓度。
• What is the concentration of salt in sea water?
  海水含盐的浓度是多少？
• I had a little lapse of concentration in the middle of the race
  我在比赛中途一时走神。
• Chess requires great concentration.
  下棋需要全神贯注。
• He plays the character with tremendous concentration combined with a pleasing modesty.
  他表演这个角色时倾注了巨大的心血，而且非常谦虚和善。
• This is a novel depicting the bitter sufferings of the inmates in a Nazi concentration camp.
  这是一本描写关押在纳粹集中营的人受苦受难的小说。
• Deionized water and tap water with different ion concentration and electrical conductivity were used as the working fluid.
  所采用的极性流体是具有不同离子浓度和导电率的去离子水和自来水。