...可吸入颗粒物浓度 悬浮菌浓度 [gap=547]Keywords negative ion , underground railway station , passenger flow , inspirable particle concentration , airborne bacterial concentration.
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分别研究了风管积尘和盘管积尘对室内可吸入颗粒物浓度、微生物浓度以及通风系统性能的影响。
Studies respectively the impact of contaminants in ducts and coils on the indoor inhalable particle concentration, microorganism concentration and performance of ventilation systems.
根据中国和美国官方公布的数字，2004年，北京大气中的可吸入颗粒物浓度是纽约的6倍多，二氧化硫浓度是纽约的两倍多。
In 2004, levels of airborne particulate in Beijing were more than six times as high as in New York, and sulfur-dioxide levels were more than double, according to Chinese and U.S. government figures.
研究发现，蒙古首都乌兰巴托年均可吸入颗粒物浓度为每立方米279微克，其后是又一个伊朗西部城市，萨南达杰，浓度为每立方米254微克。
The study found that the Mongolian capital Ulan Bator had an annual average PM10s density of 279 micrograms per cubic meter, followed by another west Iranian city, Sanandaj, with 254 micrograms.
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