concentrations

英 [ˌkɒnsənˈtreɪʃənz] 美 [ˌkɑnsənˈtreɪʃənz]

n.  专心; 专注; 关注; 重视; 集中; 聚集
concentration的复数

柯林斯词典

  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。
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双语例句

  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. 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。
  3. In heavy concentrations, ozone is irritating to the eyes, nose and throat.
    高浓度的臭氧会对眼睛、鼻子和咽喉有刺激作用。
  4. In strong concentrations it can cause nausea and vomiting.
    浓度过高会导致恶心呕吐。
  5. Expression of hydrogenion concentrations in terms of molar concentrations is rather cumbersome.
    用摩尔浓度表示氢离子浓度是相当麻烦的。
  6. Similarly, risk concentrations that might be acceptable at a single institution in a period of economic expansion could be dangerous if they existed at a large number of institutions simultaneously.
    同样，在经济扩张时期，一个单独的机构可以接受的风险集中，如果在大量的机构中同时存在，就是十分危险的。
  7. Both net fluxes and concentrations of phosphine had obviously positive correlation with temperature.
    磷化氢的净通量和浓度与温度均呈显著正相关。
  8. Selenium and aluminum are found in vanishingly small concentrations within living things.
    硒和铝在生物中含量其微。
  9. The results showed that different concentrations of cadmium ions affect differently the growth and activity of the bacteria.
    研究表明：不同浓度的镉离子对细菌的生长和活性起不同的作用。
  10. Objective To observe the effect of relative humidity on indoor concentrations of formaldehyde and ammonia.
    目的观察相对湿度对装修后室内空气中甲醛和氨浓度的影响。
  11. High concentrations of compounds in chocolate called flavonoids may lower blood pressure, short-term studies have shown.
    巧克力中高含量的名为黄酮类的复合物可以降低血压，短期研究已表明。
  12. We can calculate the different concentrations of wine and water.
    我们可以计算出葡萄酒和水的不同浓度。
  13. In their paper, the researchers also showed that these high ascorbate concentrations could be achieved in people.
    在论文中，研究人员也表示了这种抗坏血酸的高浓度在人体是可以达到的。
  14. Oxygen concentrations in excess of 23% increase the hazard exposure to personnel and material.
    氧浓度超过23%增加了暴露于其中的人员和材料的危险。
  15. Unlike carbon monoxide, gaseous hydrocarbons at concentrations normally found in the atmosphere are not toxic;
    和一氧化碳不一样的是，在空气中常被发现的气体状的浓缩碳氢化合物是无毒的；
  16. Effects of Low and High Plasma Concentrations of Dexmedetomidine on Myocardial Perfusion and Cardiac Function in Healthy Male Subjects.
    在健康男性受试者中，高血浆浓度和低血浆浓度美托咪定对于心肌灌注和心功能的影响。
  17. Dates, cranberries and red grapes have high concentrations of antioxidants, he said.
    枣子、蔓越莓和红葡萄的抗氧化剂含量很高，他说。
  18. They also reduce serum cholesterol concentrations in rats, chicks, and humans.
    它们也降低老鼠、小鸡和人体中的血清胆固醇浓度。
  19. Measure k equilibrium by obtaining the equilibrium concentrations of B and A.
    测量k平衡，通过得到B和A的平衡浓。
  20. The urinary concentrations of lactulose and mannitol were determined by a refractive index detector.
    上用示差检测器测定尿液中乳果糖和甘露醇的浓度。
  21. Record concentrations and time in order to extract rate coefficients.
    记录浓度和时间，以提取速率系数。
  22. The influence of the compositions and concentrations of rare earth dopant on refractive index was discussed.
    测量了玻璃样品不同波长光源照射时的折射率，讨论了稀土掺杂成分和浓度对折射率的影响。
  23. Heavy metal concentrations in plants and soils were studied in the area with serpentine soil in Yunnan in China.
    对云南蛇纹岩发育土壤进行了植物和土壤的重金属含量调查和分析。
  24. The changes in concentrations of organic matter were monitored in the high-intensity aquaculture ponds.
    摘要对对虾高密度养殖水体中有机物含量的变化进行了监测和分析。
  25. After equilibrium is attained, drug concentrations in tissues and in extracellular fluids are reflected by the plasma concentration.
    达到分布平衡后，便可通过血浆浓度反映组织和细胞外液的药物浓度。
  26. To the ratio of the equilibrium concentrations.
    和平衡浓度的比相关。
  27. They concluded that folic acid lowers the concentrations homocysteine in the blood.
    他们的结论是：叶酸可降低血液中同型半胱氨酸的浓度。
  28. Because at least for that pair of constituents, I know the dependents for some range of concentrations.
    因为至少，对那两个组分，我知道，它对某个浓度范围的依赖关系。
  29. However, studies of PRP have yielded varying results, likely reflecting differing platelet concentrations.
    然而，PRP的研究产生了不同的结果，可能反应了不同的血小板浓度。
  30. Effects of acute loss of energy availability on serum LH and glucose concentrations were studied.
    研究了急性能量阻断对血清促黄体素和葡萄糖的影响。
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