查询词典 mathematical model

A mathematical model for heat transfer of PCM in storage cell based on the enthalpy method was developed.

采用焓法，分析了蓄能相变材料相变区比热特性对其蓄换热性能的影响。

The mathematical model for strategic bid and minimal production costs in a compe titive electricity market is presented in this paper.

提出了在竞争的电力市场中实现发电生产成本最小化的数学模型。

The first part of this paper is to set up a novel mathematical model describing expression and regulation of trp operon, in which not only the effects of repression and attenuation on transcription are taken into consideration, but the interaction between repression gene and structural gene as well as the transportation of tryptophan across cell membrane are also considered.

论文第一部分主要在已有的色氨酸操纵子模型基础上，建立了一个新的用于描述色氨酸操纵子动态行为的数学模型，它不仅考虑了阻遏、弱化以及反馈抑制作用对转录的影响，而且考虑了表达阻遏蛋白的基因和表达关键酶的基因之间的相互作用和影响，以及色氨酸外排的影响。

Hybrid Dynamic; time-varying systems; finite horizon; optimal control; Quasi-Variational Inequality; viscosity solution; lower semicontinuous solution; uniqueness; Dynamic Programming; Viability Theory; inventory systems; mathematical model; proximal subdifferential; parabolic equation; nonlinear boundary

基础科学，数学，控制论、信息论混合动态；时变系统；有限时间；最优控制；拟变分不等式；粘性解；下半连续解；唯一性；动态规划；生存定理；库存系统；数学模型；邻近次微分；抛物型方程；非线性边界

The moisture and salinization movement mathematical model in the field under subdrainage condition is based on the assumption of neglecting the effects of horizontal hydraulic gradient,It can analogy the changes of soil water content and salinization which are changed with times and depth.

论文在忽略水平方向水力梯度影响的假定下建立了排水条件下麦田水盐运移模型，模拟土壤水盐含量随时间、空间的变化情况。

Them, it introduces Three Phase Ferromagnetic resonance circuit thoroughly and makes a further analysis of its generation of high harmonic, harmonic ferroresonance and the mathematical model of subharmonic.

然后详细地介绍了三相铁磁谐振电路，对其所产生的谐波谐振、基波谐振、分频谐波谐振建模，做了进一步的分析。

Kappa number ; sulfite cooking ; sulphite cooking liquor ; visible light ; mathematical model

纸浆硬度；酸法制浆；蒸煮液；可见光；数学模型

We analyze the mathematical model of JEM echoes consisting of a series of line spectra and regard them as a sum of several series of harmonious waves.

我们从模式分类的角度提出了利用JEM特征谱散布程度特征进行目标分类的方法。

Simulation and experiment results show that the mathematical model of AC contactor is correct; the testing system not only can fulfill its functions, but also can provide reference for AC contactor's design or manufacture and popularize to other equipments power quality susceptivity test.

仿真和试验所得结果可以为交流接触器在生产过程中的测试提供参考，并能推广到对其它用电设备进行电能质量敏感度测试。

A mathematical model including the suspension and tire parameters is developed for analyzing the automotive interior noises caused by road irregularity excitation in this paper.The interi-or noises at driver's ear position are calculated by means of admittance functions at suspension mounting points,noise transfer functions from suspension mounting points to driver's ear and suspen-sion and tire parameters.

本文建立了因路面不平度随机激励所产生的车内噪声的数学模型，借助于测得的车身悬置连接点的导纳函数、各连接点到车内耳旁位置的噪声传递函数以及悬置和轮胎参数，计算了由路面不平度所引起的车内耳旁噪声的大小。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。