In this paper,based on the meteorological data in Tianjin and experimental results obtained the characteristics of solar resource and ground source in winter in Tianjin district has been reviewed for providing a feasibility background for solar-ground source heat pumps in that region.
以天津地区气象资料和实验结果为依据 ,研究天津地区冬季太阳能、土壤热源性能 ,为研制太阳能 -土壤热源热泵提供可行性依据。
Taking the soil heat pump as the study project, compared with the air cooling heat pump, the soil heat pump is analyzed technically and economically.
主要以土壤热源热泵为研究对象 ,从技术和经济性两方面对其与风冷热泵进行了分析和比较。
As a high efficiency and energy conservation system,GSHP is fit for hot summer and cold winterarea in China.
作为一种高效、节能的绿色环保系统,土壤热源热泵系统特别适宜在广大夏热冬冷地区推广应用。
Determination of As,Sb,Bi,Cd and Sn in Soils and Sediments by Inductively Coupled Plasma Atomic Emission Spectrometry after Sublimation Separation as Iodides;
碘化物升华分离-电感耦合等离子体光谱法测定土壤和沉积物中砷、锑、铋、镉、锡
The Research Status of Bio-remediation of Heavy Metals Contaminated Soils;
重金属污染土壤生物修复技术研究现状
Environmental Response and Behavior of Heavy Metal in Soil;
重金属在土壤载体中的行为和环境响应
Effect of digestion on measurement of total mercury in topsoil;
不同消解方法对土壤样品中汞含量测定的影响
To effectively control heavy metal pollution of city roadways induced by motors, the pollution index method was adopted to analyze and evaluate the characteristics of heavy metal pollution of roadway dust and topsoil near by roadside trees, and grasp the status of heavy metal pollution of city roadways.
为了减轻汽车行驶导致的城市道路重金属污染,采用污染指数法分析、评价东京城市道路粉尘、行道树表层土壤的重金属污染特征,掌握道路受重金属污染的状况,探讨行道树树叶对重金属的捕获能力及树种间的差异。
The ratio of the content of an element in topsoils (depth 10-20 cm) to its content in deep soils (depth 150-200 cm) is called artificial environmental concentration coefficient in soils.
南京周边地区开展多目标地球化学调查获取了“双层土壤”各元素的含量,表层土壤的元素含量与其深层土壤元素含量之比值即称之为土壤中该元素的人为活动环境富集系数(简称环境富集系数),笔者介绍了有关环境富集系数的计算方法。