concentration

noun

1. 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。
2. 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
3. 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
4. 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

1. N-UNCOUNT 全神贯注;专心;专注
   Concentration on 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。
2. N-VAR 集中;汇集
   A concentration of something 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。
3. N-VAR 浓度
   The concentration of a 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。

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。
3. 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。
4. 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。
5. 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。
6. Total concentration is required with no distractions.
   要全神贯注，不能有丝毫分神。
7. I had a little lapse of concentration in the middle of the race
   我在比赛中途一时走神。
8. 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。
9. He paused and narrowed his eyes in concentration.
   他停下来，眯起眼睛专注地看着。
10. 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。
11. His ability to absorb information was astonishing, but his concentration span was short
    他吸收信息的能力令人吃惊，但是他的注意力持续时间很短。
12. She wrinkled her brows in concentration.
    她蹙额皱眉，陷入沉思。
13. It's the sort of work that calls for a high level of concentration.
    这工作需要高度集中注意力。
14. 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。
15. 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。
16. What is the concentration of salt in sea water?
    海水含盐的浓度是多少？
17. The colon is the locus of a large concentration of bacteria.
    结肠是大浓度的细菌所在地。
18. It is hard to keep one's concentration up to concert pitch in this sort of scene.
    在这种场合下，要使注意力处于高效能状态是很困难的。
19. 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。
20. Chess requires great concentration.
    下棋需要全神贯注。
21. You have to study with concentration.
    你得静下心来学习。
22. 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。
23. This concentration of airborne firepower wrought havoc with the enemy forces.
    这次机载火力的集中攻击给敌军造成很大破坏。
24. It's key nutrient, caffeine, can improve concentration and reaction time.
    咖啡因非常有营养，又能改善集中注意力的时间和反应时间。
25. 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。
26. M This is a high pressure case.
    的浓度大，Concentration，of，M，is，high。，这是一个大压强的情况。
27. 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。
28. 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；
29. 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。
30. You solve for the steady state concentration.
    你解决了稳态浓度。

noun

1. strengthening the concentration (as of a solute in a mixture) by removing diluting material

2. bringing together military forces

3. great and constant diligence and attention

   Synonym:    assiduityassiduousness

4. the strength of a solution

5. the spatial property of being crowded together

   Synonym:    densitydensenesstightnesscompactness

6. complete attention

   Synonym:    engrossmentabsorptionimmersion

7. increase in density