查询词典 temperature difference

In order to obtain the variation law of temperature during casting solidification to improve casting quality,a finite element method combining with a finite difference method was used to discretize time and space variables in the governing equations of astable heat-conduction in the process of casting solidification so as to obtain the algebraic equations for casting and mold temperature.

为了掌握铸件凝固过程中温度场的变化规律以提高铸件质量，采用有限元和有限差分相结合的方法离散铸件凝固过程非稳态热传导方程的空间和时间变量，得到了关于金属铸件和铸型温度的代数方程。

The finite difference method is adopted to calculate the temperature field on cross-section of the column, the critical temperature and the critical time, the thickness of fire resisting covering of CFST columns, All of the results were verified by experiments.

简要地介绍了钢管混凝土的耐火性能，分析了影响耐火度的因素以及用有限差分法计算火灾时的构件截面的温度场、构件的临界温度和临界时间、防火涂层厚度的结果。

On the basis of experimental research, this thesis applies 2-dimensional non-linear finite element method to the analysis of transient temperature field on the section by means of relatively high precision triangular element of six joints. When the temperature field is analyzed, finite element reseaus are divided in space field and finite difference reseaus are divided in time field, and then the program is compiled. The computing results are in good agreement with the test data. It indicates that the program is stable and precise.

在试验研究的基础上，本文采用精度较高的三角形六结点单元对构件截面二维非线性瞬态温度场进行了有限元分析，即在空间域内采用有限元网格划分，在时间域内采用有限差分网格划分，据此编制了计算程序，计算结果与试验数据符合较好，程序稳定性好，精度满足要求。

The first batch cracks of concrete bodies in South China had been caused by temperature stresses of cement hydration heat.While the double-action of (1) expansion stress of concrete and (2) temperature stress of day and night's difference of temeperature had been mainly the cause of cracks.

在南方地区，混凝土墙体拆模后的第一批裂缝是由于水泥水化热引起的温度应力造成的，而混凝土收缩引起的收缩应力与昼夜温差引起的温度应力的双重作用，则是导致后续裂缝的主要原因。

The winter air temperature is low , the interior repast environment outside difference in temperature is bigger, being had to glow with health , to sweat profusely, if leaving a dining hall in a hurry when having meal , gone on foot under the cold air stimulation rustling , contracted abruptly , been fed up with easy to arouse chill blood capillary in sweat gland and hypoderm, the blood-supply having enlarged the heart bears.

冬季气温低，就餐环境室内外温差较大，进餐的时候吃得红光满面、大汗淋漓，要是匆忙离开餐厅，在瑟瑟的冷风刺激下行走，汗腺及皮下组织中的毛细血管骤然收缩，容易引起风寒头痛，还加大了心脏的供血负担。

The quadrupolar ring's temperature field is studied numerically by finite difference method, its null drift is analyzed at given temperature circumitance.

通过有限差分法，对光纤环的Shupe效应作了研究，对四极子光纤环在非稳态传热的过程中的温度场进行数值求解，分析了光纤环在试验提供的温度环境下的温度零漂。

After the transient temperature distribution has reached dynamic equilibrium, because of radius temperature gradient periodically changing with time, the optical path difference between center and edge beam is also periodically changing with time.

当晶体温度达到周期性分布后，由于晶体径向温度梯度的周期性变化，引起通过晶体的平面光波的中心和边缘光线相对光程差也随时间作周期性变化。

Temperature field is obtained by Direct Finite Difference Method with parallelepiped mesh elements and the latent heat release is handled with a combination of equivalent specific heat method and temperature recovery method.

计算方法采用直交剖分的直接差分法；潜热处理采用等价比热法与温度修正法相结合的方法；在节约内存量和提高计算速度的基础上尽可能提高计算精度，并在三者之间取得合理平衡；对直交剖分带来的误差采用了热容量修正技术；针对不同铸造合金的凝固特点，对收缩缺陷判据进行了研究和扩展。

A kinetics model for martensitic transformation is established based on the fact that the partial derivative of martensitic fraction with respect to temperature is in linear relationship with the partial derivative of free energy difference with respect to temperature.

基于马氏体体积分数对温度偏微分与自由能差对温度偏微分呈线性关系的事实，通过对实验曲线的模拟，提出一种新的马氏体相变动力学公式。

Axial temperature and pressure drop are calculated by finite difference. Radial temperature field is calculated by finite element.

采用有限差分方法求解了轴向温降及压降，采用有限元方法求解了径向温度场。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。