查询词典 mathematical models

The mathematical models of mechanical system, thermodynamic system and electromagnetic system of a compressor driven by moving-magnet linear motor were established on the basis of the control method that piston's displacement is changed by changing the triac's time of flow.

通过控制三端双向可控硅的导通时间来控制活塞位移的方法，建立了动磁直线电机驱动的压缩机的机械系统、热力系统及电磁系统数学模型。

The design is based on these characteristics and design of teaching and scientific research model, we can design and the platform of the elevator control on mathematical models and software algorithms.

本设计是基于这些特点而设计的教学和科研模型，我们可以在这个平台上来设计和研究电梯控制的数学模型和软件算法。

The research of this dissertation used continuous timed-stamp communication model to create statistical mathematical models of clock running precision difference.

本研究采用了连续的时间戳通信模型来建立时钟运行精度差的统计学模型。

Trp and lac operons were usedsas the research object in this paper and two extended mathematical models were proposed on the basis of previous works. The parameters of the model were determined and the results were analyzed. A steady-state optimization model of tryptophan biosynthesis was established based on indirect optimization method. The network analysis was used to lac operon system.

本文以色氨酸操纵子和乳糖操纵子为主要研究对象，在前人的研究基础上建立了较为全面的新的数学模型，确定了模型参数，并对计算结果进行了分析，建立了稳态的优化模型，并利用间接优化法对色氨酸生产过程进行优化；利用网络分析法对乳糖操纵子系统进行分析。

The new method of measurement profile error of any line with error separation technique is studied.Based on developing mathematical models,computer imitation is made .

文摘：研究了在数控加工中利用误差分离技术测量线轮廓度误差的新方法，在推导数学模型基础上进行计算机仿真。

The contents of this dissertation are as follows:(1). Mathematical models of zero-dimensional, quasi three-dimensional and full three-dimensional in flow path of turbo engine are provided.

本文主要包括如下内容：(1)针对涡轮发动机通流部分的仿真分别给出了零维、准三维和全三维数学模型。

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

Two kinds of mathematical models for fungicide control index of wheat scab were built up in this paper.

经过推导，得出小麦赤霉病的两类药剂防治指标模型。

Based on the compressibility experiment of rubbed korshinsk peashrub at different temperatures ranging from 22℃ to 140℃, the mathematical models were established which could explain the relationships between the pressure and volumetric strain, the pressure and compressed density as well as the bulk modulus and compressed density, and the effect of temperature on the compressibility of rubbed korshinsk peashrub was obtained.

该文通过对揉碎柠条在22～140℃范围内4个不同温度下的压缩试验，建立了柠条在压缩过程中压力与体积应变、压力与压缩密度以及体积模量与压缩密度的数学模型，获得了温度对揉碎柠条可压缩性的影响规律。

In this paper, associated with the key problem of 550kV SF6 high voltage circuit breaker which is used in GIS of three Gorges project, the mathematical models of static electrical field and one-dimensioned and two-dimensioned gas flow field during the overall breaking process in arc chamber of circuit breaker are developed. On the basis of gas discharge theory, the criteria to judge the interruption success is determined.

本文结合长江三峡550kV GIS中SF6断路器的科技攻关项目，建立了断路器开断过程中灭弧室内静电场、一维气流场、二维气流场的数学模型；根据气体放电的基础理论选定了衡量断路器能否成功开断的标准，并通过一维和二维气流场的有机结合，有效地解决了原二维气流场计算软件无法计算有载开断的难题，具有较强的工程实用性。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。