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

• To the ratio of the equilibrium concentrations.
  和平衡浓度的比相关。
• 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。
• 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。
• 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。
• 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。
• In strong concentrations it can cause nausea and vomiting.
  浓度过高会导致恶心呕吐。
• 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。
• Selenium and aluminum are found in vanishingly small concentrations within living things.
  硒和铝在生物中含量其微。
• Record concentrations and time in order to extract rate coefficients.
  记录浓度和时间，以提取速率系数。
• 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。