英语释义

1. the act or process of concentrating the state of being concentrated especially direction of attention to a single object
All that noise is disturbing my concentration.

2. an academic major or area of focus within a major
The student chose law as his concentration.

3. a concentrated mass or thing
a concentration of wealth in the merchant class

4. the amount of a component in a given area or volume
The ozone concentration in the lower stratosphere has declined.

5. the ability to give your attention or thought to a single object or activity the ability to concentrate

6. the act of giving your attention to a single object or activity

7. a large amount of something in one place

8. close attention to or thought about a subject
There is a concentration on math in the curriculum.

9. the ability to pay close attention
I lost my concentration when an ambulance drove past.

10. a large amount of something or a large number of people in one place

11. the act or action of concentrating: as

12. a directing of the attention or of the mental faculties toward a single object

13. an increasing of strength (as of a solute or a gas in a mixture) or a purifying by partial or total removal of diluents, solvents, admixed gases, extraneous material, or waste (as by evaporation or diffusion)

14. a crude active principle of a vegetable especially for pharmaceutical use in the form of a powder or resin

15. the relative content of a component (as dissolved or dispersed material) of a solution, mixture, or dispersion that may be expressed in percentage by weight or by volume, in parts per million, or in grams per liter

英汉例句

• objective to study the influence of the different concent ration of as\-2o\-3 on micronuclei and nuclear abnormity in peripheral blood erythrocytes of monoopterus albus.

  目的观察不同浓度的三氧化二砷对黄鳝外周血红细胞微核和核异常的影响。

相似词

absorption吸收；全神贯注，专心致志

attention注意力；关心；立正！（口令）

engrossment垄断居奇；用大字写；大量收买

enthrallment奴役；沉迷

immersion沉浸；陷入；专心

相反词

inattention不注意；疏忽；粗心