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

• 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。

双语例句

• 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。
• 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；
• 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。
• Record concentrations and time in order to extract rate coefficients.
  记录浓度和时间，以提取速率系数。
• 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。
• Selenium and aluminum are found in vanishingly small concentrations within living things.
  硒和铝在生物中含量其微。
• To the ratio of the equilibrium concentrations.
  和平衡浓度的比相关。
• 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。
• 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。
• 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。