查询词典 a constant temperature

A small quantity of Ca can increase the dielectric constant and decrease the dielectric loss at the room temperature.

少量的Ca的引入还会提高室温附近的介电常数，降低介电损耗。

At about 0.8 um, the dielectric constant of Bao.esSro.ssTiO3 ceramic at ambient temperature displays a maximum value, and the diffuseness parameter displays aminimum value.

实验研究了不同晶粒尺寸条件下TiO_3陶瓷的介电特性。

The second is a rigorous solution of Green Functions at low temperature, from it we calculated analytically the stiffness constant of spin waves and numerically the dispersion relations and density of states of spin waves.

二是在低温下严格求解了超晶格的Green函数，并计算了低温自旋波的刚度系数。

In order to reduce error of experimental data treatment, to strengthen accuracy of the result in conductivity determination of the dissociation constant of acetic acid, and also to further synthesis of experiment for training students' ability to treat data and to graph with computer, both Excel and calculator with statistical function have been utilized to perform a linear regression analysis of temperature-limiting molal conductivity of acetic acid solution.

为了减少实验数据处理的误差，提高结果的准确性；也为了进一步加强实验的综合性，培养和提高学生应用计算机处理实验数据和作图的能力，本文在电导法测定醋酸解离常数的实验中分别采用Excel电子表格和具有统计功能的计算器对醋酸溶液的温度和极限摩尔电导率数据进行线性回归分析，得到一元线性回归方程和相关系数，进而确定实验温度下醋酸溶液的极限摩尔电导率。

The variable connectivity index is used in the modeling of the physical properties of polymers. A new model is proposed for the heat capacity at constant pressure of solid and liquid polymers at room temperature, which is simple and has good accuracy as well as predictive capability.

率先把可变连接性指数应用于聚合物物理性质的模型化研究中，并对聚合物热容数据建立了比以前模型结构简单且精度更高、预测性更好的新模型，促进了种新型指数的广泛应用。

If the air temperature is constant throughout a layer of atmosphere, the ambient lapse rate is zero, the atmosphere is described as isothermal, and the atmosphere is stable.

如果大气层的空气温度是恒定不变的，四周垂直递减率为0，那么大气被描述为等温的，大气是稳定的。

When the current through the PN junction is constant and the temperature rises, the positive volt reduces. According to the analysis of the variation of the positive volt, a linear formula is given.

PN结在恒流条件下，通过对其正向偏压随温度升高而降低的线性化分析，得到其传感原理的简化线性公式。

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。

Incipient ferroelectrics or quantum paraelectrics constitutes a very unique subject of current interest due to its high value of dielectric constant , low dielectric losses and high degree of tenability by the external electric field and temperature .

等由于其高介电常数，低介电损耗，对外场和温度高度的可调协性等独特的性质和应用价值一直是一类人们广泛研究的晶体材料。

The fractional change in length or area or volume per unit change in temperature at a given constant pressure.

在恒定压力下长度或面积或体积的微小变化和单位温度变化的比值。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。