The common problem of soil temperature field around oil pipelines buried in frozen ground area is the freezing damage.
冻土区埋地管道遇到的最常见问题是冻害破坏。
An unsteady two-dimensional soil temperature field model is established using the limited difference method in this paper.
在前人研究基础上，用有限差分方法建立了一个非稳态二维地温场的数学模型。
The mathematical model and boundary conditions of soil temperature field in finite region is established through analysis of geometry model of underground heated pipeline.
通过分析埋地热油管道的几何特性建立了有限区域内非稳态热油管道土壤数学模型和边界条件。并使用PHOENICS软件对该数学模型进行了求解。
Studies are conducted on melting snow and keeping green by electric cable heating system on Beijing sports turf in winter, grass seed selection, and turf soil temperature field.
本文对北京地区草坪冬季电缆电热融雪保绿问题，草种的选择及土壤温度场进行研究，旨在对北京地区草坪电缆加热系统进行优化设计。
The influences of groundwater advection to heat transfer process and different soil property to the soil temperature field around the single U-tube underground heat exchanger were analyzed.
分析了土壤中水的渗流对传热过程的影响，并对考虑渗流作用时不同土壤物性对单根U型垂直埋管换热器周围土壤温度场进行了模拟计算与分析。
The variation of soil water, salinity and temperature in the field makes the coupled transport processes of them very complicated.
田间土壤水分、盐分和温度变化使水、盐、热耦合迁移的过程极其复杂。
In order to study the effect of the soil freezing point on the calculation of frozen wall thickness, some models of the artificial ground freezing temperature field were established.
为了研究土层冻结温度对冻结壁厚度计算的影响，构建了考虑土层实际冻结温度的人工冻结温度场模型。
Effects of straw mulch on soil erosion and water, soil temperature, sorts and multitudes of small animals, weeds growth and potato productivity were studied through field experiments.
通过田间试验研究稻草和玉米秸秆覆盖对坡耕地土壤侵蚀、土壤水分、土壤温度、土壤小动物种类和数量、杂草生长及马铃薯产量的影响。
According to the observing data of soil temperature in vegetable field and nearby air temperature, dynamic of soil temperature in vegetable field and its forecasting model were studied in Guangzhou.
根据蔬菜田土壤温度以及附近气象站气温观测资料，对广州地区蔬菜田土壤温度的变化特征及其预报模型进行了研究。
During the construction process, keeping abreast of the safety status of the frozen soil curtain by temperature field monitoring and analyzing is one of the important measures for risk control.
在施工过程中，通过温度场监测分析掌握冻土帷幕的安全状态，是风险控制的重要手段之一。
Besed on the mathematic model of temperature field suggested by V. S. Rugiyanov (1959), we successfully add a correction term of transfer heat considered the fact that moisture migrates in soil.
本文在鲁基杨诺夫等（1959）研究单体土冻结过程温度场的数学模型中，成功地引入了考虑土体湿迁移因素的迁移热修正项。
The field experiment was conducted to study the effects of different conservation tillages on soil temperature, moisture and yield formation of spring maize.
通过大田试验研究了保护性耕作对土壤水温和春玉米产量形成的影响。
An instrument is designed for rapid measurement of temperature and moisture of soil in field soil.
为快速测量大田土壤温湿度，而设计的仪器，湿度测量采用电容法。
The problem of transmission of loaded contact frozen soil with creep effect in the temperature field is studied using critical boundary element method.
基于临界边界单元法，研究温度场中具有蠕变效应的冻土接触载荷传递问题。
It's important to decide thermal parameters in simulating temperature field and analyzing stability of frozen soil roadbed.
在冻土路基温度场模拟和稳定性分析中，冻土路基热物性参数的取值是至关重要的。
Relative air humidity is the dominant factor for field pea to affect daily dynamics of leaf water potential, followed by air water potential, soil water suction , air temperature and solar radiation.
影响豌豆叶水势日变化因子中最重要的是大气相对湿度，其次是大气水势、土壤水吸力、大气温度和太阳辐射。
Relative air humidity is the dominant factor for field pea to affect daily dynamics of leaf water potential, followed by air water potential, soil water suction , air temperature and solar radiation.
影响豌豆叶水势日变化因子中最重要的是大气相对湿度，其次是大气水势、土壤水吸力、大气温度和太阳辐射。
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