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。
• 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。
• 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。
• 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。
• In strong concentrations it can cause nausea and vomiting.
  浓度过高会导致恶心呕吐。
• 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。
• 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。
• 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；
• 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。
• Record concentrations and time in order to extract rate coefficients.
  记录浓度和时间，以提取速率系数。