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

• 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。
• The concentration of acid in vomitus or aspirate need not reach this limit.
  呕吐物或吸引液内酸的浓度不需要达到这一程度。
• He paused and narrowed his eyes in concentration.
  他停下来，眯起眼睛专注地看着。
• 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。
• Total concentration is required with no distractions.
  要全神贯注，不能有丝毫分神。
• It advances output and concentration of brine and acquires the economic effect.
  经过两年的生产实践，提高了卤水的产量和卤水浓度，取得了较大的经济效益。
• The influence of different concentration of oxalic acid matrix on elemental inductively coupled plasma mass spectrometry was investigated.
  研究了不同浓度乙二酸介质对元素电感耦合等离子体质谱行为的影响。
• 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。
• The urea concentration to wash and purify protein was confirmed.
  确定了洗涤和溶解包涵体的最佳尿素浓度；
• A gas in solution diffuses from region of greater to one of less concentration.
  溶液中的气体由浓度较高的区域向浓度较低的区域扩散。