Control of urban traffic pollution the motor vehicle emission should be controlled.
控制城市交通污染，必须严格控制机动车的排放。
The result shows that the system can confirm the effect of vehicle emission on air pollution composition and evaluate the effect of traffic management and control strategies on vehicle emission.
结果表明：该系统不但可估算并预测车辆在某一路段的污染物排放水平，还可评价交通管理改进措施对车辆排放的影响。
To formulate an adaptable motor vehicle exhaust emission standard is one of the important events of air pollution control according to domestic and foreign experience.
根据国内外经验，制订合适的汽车废气排放标准是控制大气污染措施之一。
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