The pollution status of Carbon Monoxide(CO) in street canyon and its horizontal and vertical distribution of concentrations have been discussed in the paper.
本文分析了典型街谷地区CO 污染的现状及其浓度的垂直分布和水平分布的变化情景。
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The cause for increasing of NO, CO and SO_2 concentration during 20: 00 ~ 23: 00 on September. 9 of 2001 is due to weak vertical diffuse and pollutants accumulated at low atmosphere in the night.
A high speed line material vertical rolling mill framework moderating machine gearbox of Hunan steel Co. , Ltd, the gear teeth of the first transmission spiral bevel wheel were broken.