利用示踪气体法计算了地下停车库的自然通风量，并讨论了地下汽车库内一氧化碳允许浓度和小汽车一氧化碳排放量的确定。

Calculates the natural ventilation rate by the tracer gas decay method. Explores the definition of the indoor criterion of carbon monoxide concentration and the carbon monoxide emission from cars.

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为了提高客舱内空气品质，引入了空气龄的概念并给出了由客舱内典型点的示踪气体的浓度求空气龄及通风效率的方法。

For improving the air quality, the concepts of age of air are introduced and the solutions of age of air and ventilation efficiency are obtained by using tracer gas concentration of…

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本水处理剂应用的示踪性聚合物是复合药剂中起缓蚀、阻垢作用的组分之一，因此可以更准确地指示复合药剂的有效浓度。

The tracing polymer as one of the corrosion retarding and scale inhibiting components can indicate the effective concentration of the composite chemical accurately.

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