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电厂输煤带厂房原采用吸尘罩降尘,1995年5月改用水喷雾降尘。1994年与1995年取3个季度各监测点粉尘浓度平均值比较,经检验差异均有显
Power plant coal plant belt dust cover the original dust, in May 1995 instead of water spray dust. 1994 and 1995 to take three quarters of the monitoring point average dust concentration, the test showed significant differences were