At the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among "heat reservoir effect", "confined effect" and "shadow effect".
背景气压对激光烧蚀等离子体谱线的影响，其机理可以认为是“热库效应”、“约束效应”及“阴影效应”相互竞争的综合结果。
Highly application of GIS to urban traffic pollution management has been developed, which consisted of proscenium-GIS system, back stage-motor vehicle emission model and spatial data base.
开发了高层应用城市交通污染管理信息系统，由前台g IS系统、后台机动车排放模型、空间数据库三大部分构成。
The spatial distribution of vegetation VOC emission fluxes is corresponded with the distribution of the vegetation and vegetation VOC emission fluxes are also varying with the seasons.
植被VOC 的排放量分布情况与中国植被的分布情况有一定的相关性，并且VOC 的排放情况具有明显的季节依赖性。
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