| 1. | Pollution characteristics of carbon tetrachloride in soils near a pesticide plant 某农药厂周围土壤四氯化碳污染特征研究 |
| 2. | Study on heavy metal pollution of soil nearby coal gangne dump in a coal mining area 某矿区煤矸石堆周围土壤重金属污染特征研究 |
| 3. | Assessment of heavy metal pollution and characteristics of its spatial distribution in soil near the typical industry area 典型工业区周围土壤重金属污染评价及空间分布 |
| 4. | The calculation for soil temperature field around underground heat oil pipeline is the important part for researching on stopping transportation time , restarting and so on during intermittently transportation 摘要埋地热油管道停输过程周围土壤温度场的计算是研究间歇输送过程中确定停输时间以及再启动等问题重要组成部分。 |
| 5. | The results show that the soil has been polluted by the municipal waste leachate , the concentration of heavy metal in landfill soil is higher than that in unpolluted soil 结果表明,受垃圾渗滤液的浸蚀影响,垃圾区周围土壤酸性增大,养分含量增高;垃圾区土壤的重金属含量明显高于对照区土壤,表明垃圾区周围土壤已受到渗滤液的重金属污染,土壤性状发生明显变化。 |
| 6. | With an actual ground source heat pump system example , based on the hourly calculation of annual cooling and heating load , carries out numerical simulation on heat transfer characteristics of the soil around compact pile - buried underground heat exchangers with large land area 摘要以一实际地源热泵系统为例,在全年逐时负荷计算的基础上,对大面积密集型桩埋换热器管群周围土壤的换热特性进行了数值模拟。 |
| 7. | Finite element methods was used in calculating the temperature field of the soil around the buried pipelines and the temperature field under conditions of pipeline leak . in emulating analyzes , a kind of finite element analyzing software " ansys " was used , the results showed a preferable match with the practical measurements 本文在计算埋地热力管道周围土壤温度场及泄漏情况的温度场的时候均采用了有限元的计算方法,采用ansys大型有限元工程分析软件进行数值仿真分析,计算的规律分布与实际测量温度场分布比较吻合,具有一定的精确性和可靠性,能够反映实际情况。 |