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

• 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。
• To the ratio of the equilibrium concentrations.
  和平衡浓度的比相关。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• Record concentrations and time in order to extract rate coefficients.
  记录浓度和时间，以提取速率系数。