nonattainment rate

英 美
  • 超标率
  • rate n.比率;速度;价格;费用;等级v.认为;估价;定等级;值得;怒斥;责骂
    1. The pollution of the ground water in the northern cities is more serious than that in the south,with high unattainment rate.
      北方城市地下水污染重于南方城市,超标率高。