| 1. | Modification of rinsing techniques by installing cascading or counter-current rinse systems increases the contaminant concentration .
安装了阶梯式装置或对流漂洗装置，可改进漂洗技术，把污染物的浓度提高。 |
| 2. | Abstract : with numerical simulation method the effect of the airflow pattern created by the exponential inlet on contaminant concentration and thermal comfort in an operating room was investigated
文摘:就变化风速的送风口所产生的气流流型对外科手术室内的细菌浓度和人体舒适的影响进行了数值模拟分析。 |
| 3. | By the numerical simulation , calculate the distribution of velocity ^ temperature and contaminant concentration of air in the room under different modes of air flow organization , and through analysing the outcomes of simulation , draw some conclusions
对常见的办公室环境，不同送回风方式下的室内空气的速度、温度及污染物浓度的分布进行模拟计算，并对模拟结果进行分析，得出结论。 |
| 4. | Six main factors which influence contaminants concentration in tail gas have been concluded and relevant solutions have been offered after on - site monitoring tail gas of automobile and analyzing some problems of tail gas treatment in jiangsu oilfield
江苏油田通过对汽车尾气的现场监测，以及尾气治理中的一些问题分析，总结出影响汽车尾气中污染物浓度的六大因素，并提出相应的解决措施。 |
| 5. | Based these researches acquired and using a mathmatical model , this thesis tries to research the contaminant concentration distributions of three - dimention indoor turbulent flow by means of computational fluid dynamics and heat transfer , and then works out the ventilation efficiency
本文企图在前人的基础上，通过建立相应的数学模型，用流体流动数值计算方法来模拟室内三维的紊态气流中的污染物浓度分布，进而分析计算室内的通风效率，得出通风效率较好的室内气流组织形式。 |
| 6. | The research results show that compared with the uniform inlet velocity profile , the exponential inlet velocity profile has more advantages to get lower contaminant concentration , to prevent patient and operating apparatus in the operating area from infection by airborne disease germs and to reduce the airflow rate needed for pollutant concentration control
研究表明，与通常采用的均匀风速的送风口相比，变化风速的送风口对于降低手术室工作细菌浓度，防止病人手术切口及手术器械等回风气流携带的浮游细菌再次感染，以及减少手术室的送风量等方面具有明显的优点。 |
