1. Particle concentration in the ambient air still keeps at relatively high level while the concentration of other pollutants has come close to or already met the national standards. 
   目前，北京市主要大气污染物中，颗粒物浓度一直居高不下，其它污染指标已接近或达到国家标准。
2. The concentration of the suspended particulate in the mainstream of the Yellow River is rather high, and the maximum level is 4851 mg/l. 
   黄河干流悬浮物浓度很高，最高达4851毫克/升。
3. directed with intense concentration. 
   以高度的集中指向……。
4. Her powers of concentration. 
   他集中注意力的能力
5. maximum allowable concentration for toxicant 
   毒物最大容许浓度

查看更多例句 相关情景会话

• 1. 浓度级
  {n.}计算机系统级 concentration level...浓度级 conceptual level...方案阶段,概念层 concrete levelling course
  www.ifanyi.cn - 相关搜索
• 2. 浓缩水平；富集水平
  concentration factor浓缩系数；富集系数...concentration level浓缩水平；富集水平...condensate冷凝；冷凝液
  www.for68.com - 相关搜索