查询词典 cubic equation

This paper takes Daqing City of Northeastern China s Heilongjiang Province as an example,and introduces the way of gaining land cover information based on the TM image.Then the cubic equation is established to describe the dynamic situation of account of land use.

该文以大庆市为实例，介绍了以TM卫星影像数据为数据源，提取土地覆盖信息的方法，并以此为基础建立以时间为自变量的三次方程，来描述土地利用类型的数量的动态情况。

On the basis of the calculation of phase equilibrium of multicomponent mixture,in this paper,the main equilibrium properties of an optimum gas mixture are calculated using the cubic equation of state ,including P-V-T parameters,enthalpy and entropy.

在基于多元混合物工质气液相平衡计算的基础上，介绍了利用立方型状态方程计算多元混合物节流制冷工质的压力，比热容、温度、焓和熵等平衡物性的方法。

By the cubic equation fitting based on the data detected in measurement system as math model, the compensation program is compiled to carry out distortion correction in experiment program.

以检测装置测量拟合得到的三次补偿方程作为畸变校正的数学模型编写了测量校正程序，对光电测量系统进行了实验检测。

The diversity and evenness are low when the MQCIs are less than 15% and greater than 45%, and reach to high when MQCI in the middle of 15% and 45%. The relationship between MQCI and richness index can be best presented by a cubic equation, and no apparent trend can be found when MQCI is greater than 20%.

多样性和均匀性指数与草甸质量盖度指数之间关系的可以分别用二次方程式进行描述，当高寒草甸的草地质量指数在15%以下时，多样性和均匀性指数均较低，介于15%～45%之间时两者都很高，大于45%后，有下降的趋势；物种丰富度与草甸质量盖度指数之间的关系可用三次方程式进行描述。

The coercivity follows the cubic equation with the content of carbon nanotube. Based on the classical hysteresis theory, a new inclusion theory with the cylinder morphology is developed, combined with stress theory the expression of coercivity is given.

基于传统的磁滞机理，发展了具有圆柱形状杂质的含杂理论，结合应力理论，给出了复合材料的矫顽力的表达式，不同体积含量的碳纳米管的复合材料的磁滞机理由含杂理论和应力理论协同控制。

This work presents a viscosity model based on Peng-Robinson cubic equation of state for a better description of viscosity. A viscosity model has been developed based on the similarity between PVTand TμP relationship and the PR EOS.

本文基于P-V-T-与T-μ-P关系的相似性，结合Peng-Robinson立方型状态方程，建立了一个预测纯烷烃气液相粘度的统一模型。

The F function modified cubic equation of state-FRKS and the improved binary interaction function by introducing the pressure factor,were used to correlate excess volumes of binary mixtures at high pressure.

利用F函数改进的立方状态方程—FRKS方程，并在二元互作用函数中引入压力项因子，对高压下二元系的超额体积进行拟合。

The purpose of this chapter is to present a very straight forward approach and indicate the utility, advantages and power of using the combinations of the linear transformation approach and the trigonometric solution for the cubic equation to obtain a general closed-form analytic solution for bulk waves in orthotropic anisotropic materials.

目的是综合应用线性变换与一元三次方程的求解技术得到正交各向异性材料中平面体波的严格解析解。

Then, an ideal random-packed-sphere model with simple cubic, body-centered cubic and face-centered cubic structures is presented to predicate the specific protonic and electronic conductivities of the catalyst layers. A correlation equation of the specific conductivity is obtained and the model is validated by the good agreement between the calculations and the measured data.

然后，分别用简单立方、体心立方和面心立方三种自由堆积球结构首次建立了描述催化层有效质子和电子传导率的理论预测模型，分析了电解质本体电导率、球半径、接触系数和接触角对质子传导的影响，得出催化层有效质子和电子传导率的计算公式，模拟结果与实验数据吻合良好，证实了模型的有效性。

Characterization of Reservoir Fluids Based on previous publications on this topic, a theoretically correct algorithm capable of predicting the phase behavior of reservoir fluids with much less number of pseudo-components had been developed, the new algorithm had been tested by experimental data, and the computation efficiency show reasonable improvement over previous publications 3 Mixing Rule for Non-Ideal Systems Previous publications on this topic had been reviewed, a new density independent mixing rule which can give a smooth transition from van der Waals rule to G〓 model had been developed, with this rule G〓 model could be directly incorporated into cubic equation of states, ad hoc treatment adopted and problems met by previous publications were avoided.

高度非理想体系的混合规则系统总结了该领域的进展，建立了新的混合规则，新混合规则能平滑地从VDW流体转变为溶液模型，可以直接应用原溶液模型的参数，与已发表的各类方法相比，新模型具有更坚实的理论基础；该混合规则可以在低温低压至高温高全程范围内关联和预测体系的相态行为，包括高度非理想的体系；该混合规则经过了实验数据的检验，结果显示新混合规则的预测能力优于WS混合规则。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。