查询词典 heat capacity

This paper analyzed the air-conditioning system of one specific office building in Beijing, calculating the costs of unit cold and heat exergy and the unit cold and heat capacity of adopting GSHP system and air source heat pump system separately. With these numbers as standard for evaluation and comparison, it supports the conclusion that adopting GSHP system is better than adopting air source heat pump system and the heat economics analyzing method is more accurate than that based on energy.

以北京某一办公楼建筑空调系统为背景，选用地源热泵系统和风冷热泵系统两种方案，具体计算出二者的单位冷火用成本和单位冷热量成本，并以此作为评价指标，经分析比较，得出地源热泵系统方案要优于风冷热泵系统方案；以火用为基础的热经济学分析法要比以能为基础的分析法更全面准确。

The specific heat capacity of AEFOX-7 was determined with micro-DSC method and theoretical calculation method, and the molar heat capacity is 214.50 J·mol-1·K-1 at

采用微量热法和理论计算方法研究了AEFOX-7的比热容，298.15K时的摩尔热容为214.50 J·mol-1·K-1。

Replacing the liquid molar heat capacity at constant volume by its molar heat capacity at constant pressure causes a relative error from 17%to 56%.

若以摩尔定压热容的值代替摩尔定容热容，在上述13种液体中的误差为17%～56%范围以内。

The authors have for the first time come up with the conception of a unitsection separate node point heat resistance and heat capacity four dimensional heat network for a solar energy collector system and on this basis set up a heat collection process dynamic emulation model for the solar energy collector system with a cavity absorber trough paraboloidal mirror.

在首次提出太阳能集热器系统单元段分节点热阻、热容网络——四维热网络概念基础上，建立腔体式吸收器——槽形抛物镜太阳能集热器系统的集热过程动态仿真模型。

Nine thermodynamic properties, combustion enthalpy, evaporation enthalpy, liquid enthalpy and heat capacity, vapor heat capacity, thermal conductivity, kinematic viscosity, density and vapor pressure, are predicted or correlated with satisfactory results by using a simple hypothesis of the groups for petroleum fractions.

简单的基团假设，可以定量地预测和关联石油馏分燃烧焓、汽化焓、液体焓与热容、汽体热容、热导率、运动粘度、密度和蒸气压等9种热力学性质，效果满意。

The dynamics and heat transfer on the spinning line during the air drawing process are discussed in detail, mainly relating the forces acting upon the polymer along the spinning line and the expressions of the air drawing coefficient C〓 and heat transfer coefficient h. By introducing the power-law model as the constitutive equation to describe the theological properties of polymer melt and considering the changing of the density and specific heat capacity of polymer melt at constant pressure with the polymer temperature, the former model of polymer air drawing is improved and a complete polymer air drawing model is established, which is integrated with the model of air jet flow field of dual slot die.

在此基础上，对前人的聚合物拉伸理论模型进行了改进，以幂律模型作为描述聚合物熔体流变行为的本构方程，并考虑了聚合物熔体密度和定压比热随聚合物熔体温度变化而变化这个因素，从而建立了完整的熔喷聚合物拉伸理论模型。

Superconductive heat tube has a very low heat capacity and a very quick heat conductivity (over 1000 times than that of copper), so it is a fast heat conductive tube.

清华航空超导热管有一个非常低的容量，并且有着异常迅速的热传导性(是铜传热速度的1000倍以上)，是一个快速热传导管。

In this paper, in accordance with the mixed method, a measuring system, which consisted of a hydrothermograph with magnetic force agitator, a potential difference meter and a digit thermoammeter etc., were used in the determination of heat capacity of short paddy grain growing in the south China, with a special attention to the influence of moisture content upon the heat capacity of rough rice.

该研究根据混合测定法原理，用磁力搅拌式水卡计、电位计以及数字温度计等，组成一套测定装置，对我国南方产短粒型稻谷的热容进行测定，着重研究了稻谷的含水率对热容的影响。

Contents of water, protein, carbohydrate and fat of food were set as the input and the specific heat capacity was set as the output.The food contained starch, orange juice, beef etc, and the range of specific heat capacity was relatively comprehensive [1.5-4.0 kJ/].

该模型以食品中的水、蛋白质、碳水化合物及脂肪含量为输入量，以其比热容为输出量，研究的食品包括淀粉、橙汁、牛肉等近20种，比热容变化范围覆盖较全面[1.5~4.0kJ/]。

In order to optimize the design of hot blast stove, a model of heat transfer in chamber of hot blast stove was developed and the software based on the model was established. The effect of the checker thermal characteristics such as thermal conductivity, heat capacity, density etc on the temperature of blast and checkers,the heat accumulation and heat release of checkers was determined.

为优化热风炉设计，建立了热风炉蓄热室内传热过程的数学模型，制作了应用程序软件，探讨了不同的格子砖物性参数，如导热系数、比热容和密度等对格子砖温度场分布、气体温度分布以及格子砖蓄热量和放热量的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。