1) frozen base soil
基土冻结
2) soil freezing
土壤冻结
1.
In order to search the effect of soil freezing on heat exchange characteristics of ground heat exchangers in cold zone,develops a heat transfer model of soil around ground heat exchangers taking soil freezing into consideration,and solves the freezing phase change problem by apparent heat capacity method.
为了探讨寒冷地区土壤冻结对地源热泵地埋管换热器换热特性的影响,建立了考虑土壤冻结的地埋管周围土壤传热模型,并利用显热容法对冻结相变问题进行了处理。
2.
Based on the numerical calculus of soil freezing and the apparent heat capacity method, completely and partly implicit difference schemes of the heat transfer equation were deduced by the finite difference method with variable space step.
针对土壤冻结过程的数值分析,基于显热容法用有限差分法构造出热传导方程变空间步长的半隐格式和全隐格式。
3.
Based on the basic equations of simultaneous soil water and heat transfer during soil freezing, the coupled equation of moisture and heat is deduced.
计算结果表明，该方法不仅能模拟冻结过程中土壤水分、温度的变化，且在计算中土壤含水量较低时不需要在冻结区引入冰的阻抗系数的概念，较好地改进了已有的数值模拟，为模拟各种不同条件下的土壤冻结过程创造了条件。
3) frozen clay
冻结粘土
1.
At the same time,the effect of negative temperature and confining pressure on the strength of frozen clay was analyzed.
以取自华东某地的深部粘土为研究对象,根据室内单轴和三轴压缩试验的试验结果,分析了高围压下冻结粘土的应力-应变行为与单轴压缩条件下应力-应变行为的异同,并讨论了围压和温度对冻结粘土强度的作用。
2.
The impact toughness and the uneven extent of destroyed sample are the practical indexes of impact properties of frozen clay.
以冻结粘土为试样,利用摆锤式冲击试验仪进行不同温度、不同冲击能量的带缺口的冲击实验,利用凿测器进行了冻土凿碎比能试验。
3.
The longitudinal and transverse wave velocities of frozen clays are measured by UVM-2 ultrasonic instrument and 500 kHz broadband ultrasonic transducer at the temperature of -1℃,-3℃,-5℃,-7℃,-10℃,-12℃,-15℃,-17℃and -18℃.
用ＵＶＭ－２型声波仪和５００ ｋＨｚ宽带超声换能器实测了在－１℃，－３℃，－５℃，－７℃，－１０℃，－１２℃，－１５℃，－１７℃及－１８℃等９个不同温度下冻结粘土的纵、横波速，对试验数据进行了分析，结果表明，冻结粘上的纵、横波速度随温度的降低而增大，当温度从０℃降至－４℃时，波速与温度呈线性关系，随着温度的继续降低，波速增加减慢。
4) frozen silt
冻结粉土
1.
The compressive strength tests were performed on frozen silt with layered structure under loading vertical and parallel to ice layer with various temperatures and strain rates.
在不同温度和应变率条件下分别垂直和平行冰层对层状构造冻结粉土进行了单轴抗压强度试验,分析了2种不同加载方向对层状构造冻结粉土力学性质的影响。
2.
To explore specimen shape effects on the compressive strength of frozen silt,a series of uniaxial compressive strength tests was respectively performed on frozen silt in cylindrical and cubic shapes at the same experimental conditions.
在不同温度和应变率条件下,分别对圆柱体和正方体冻结粉土进行了单轴抗压强度试验,分析比较了二者的应力-应变关系、抗压强度及破坏应变。
3.
Creep tests were conducted on frozen silt (loess) under dynamic loading with the frequency of 5Hz at -5℃.
对冻结粉土在不同围压下进行了振动蠕变试验,振动频率为5Hz,试样温度为-5℃试验发现蠕变破坏时间及最小蠕变率随围压的变化具有极值,并据此提出了最大强度临界围压的概念,而破坏应变则与围压基本无关,其蠕变破坏准则与静载下的破坏准则具有相同形式。
5) frozen clay
冻结黏土
1.
Experiment and analysis on drillability of artificially frozen clay;
人工冻结黏土可钻性试验与分析
2.
Uni-axial compressive strength tests were conducted on four frozen clay at various loading rate and at the temperatures of 0℃、-15℃、-25℃、-45℃.
试验结果表明:(1)冻结黏土瞬时单轴抗压强度与温度、含水量密切相关,其值随温度的降低而增大,随含水量的增加而增大;(2)在-25℃条件下,当冻结黏土的含水量低于其最优含水量时,其瞬时单轴抗压强度随含水量的增加而明显增大,而当土体含水量高于其最优含水量时,其瞬时单轴抗压强度随含水量的增加,没有明显变化。
6) frozen loess
冻结黄土
1.
Tensile strength of frozen loess varying with strain rate and temperature;
冻结黄土抗拉强度与应变率和温度的关系
2.
The paper advances some new development of artificially frozen loess in uniaxial creep test.
人工冻结黄土微观损伤方式形态规模与冰晶位错形式相仿,均以旋形位错为主。
补充资料：5-乙基-5-（1-甲丁基）-2-硫代巴比土酸钠
分子式：
分子量：
CAS号：
性状：淡黄色粉末，有吸湿性和不愉快气味。
溶解情况：易溶于水，溶于乙醇。
用途：超短时作用的巴比妥类药物。供静脉注射的全身麻醉药；也可用于抗惊厥。
制备或来源：用乙基丙二酸酯与硫脲缩合，然后酸化得硫喷妥，再与乙醇钠作用制得。
备注：性质不稳定。水溶液放置时分解。干粉密封于安培瓶中，临用前配制溶液。
分子量：
CAS号：
性状：淡黄色粉末，有吸湿性和不愉快气味。
溶解情况：易溶于水，溶于乙醇。
用途：超短时作用的巴比妥类药物。供静脉注射的全身麻醉药；也可用于抗惊厥。
制备或来源：用乙基丙二酸酯与硫脲缩合，然后酸化得硫喷妥，再与乙醇钠作用制得。
备注：性质不稳定。水溶液放置时分解。干粉密封于安培瓶中，临用前配制溶液。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条