No acid rain has fallen in the region. The annual level of suspended particulate matter in the urban atmosphere averages 340 microgram per cubic meter a day, well within state standards.

 
  • 全区没有出现酸雨,城市大气中总悬浮微粒年日均值为340微克/立方米,大大好于国家大气环境质量的要求。
今日热词
目录 附录 查词历史