查询词典 field type

Maxwell's equations group in fact was already found in the basic experimental laws of electromagnetic phenomena, as well as a single magnetic pole does not exist on the facts and the integrated displacement current assumptions, using an international system of units, these equations can be written as: DivDW =ρ or DW =ρ(1) kiDivBq = 0 or Bq = 0 (2) kiCurlEBq =- Zt or × EqkZ =- BqZt (3) ZCurlHDWDW = jE Zt, or × HW = jE Zkt (4) Z-type in the Curl, and Div were vector operator curl and divergence, Micro-k points for the Hamiltonian operator, in the rectangular coordinate system,= iZZEkx jEy kqz, iE, jE, kq along Zx, y, z-axis unit vector, a vector for any AW are × AW = CurlAW, kAW = DivAW; DW for the electric displacement, Bq for the magnetic induction intensity, Eq, and HW, respectively i field and electric field strength, jY for the conduction current density,ρ the charge density for free.

麦克斯韦方程组实际上是当时已发现的电磁现象的基本实验定律以及单个磁极不存在的事实和位移电流假设的综合，采用国际单位制，这些方程式可写成：DivDW＝ρ或DW＝ρ（1）kiDivBq＝0或Bq＝0（2）kiCurlEBq＝－Zt或×EqkZ＝－BqZt（3）ZCurlHDWDW＝jE＋Zt或×HW＝jE＋Zkt（4）Z式中Curl和Div分别为矢量算符旋度和散度，为哈密顿微k分算符，在直角坐标系中，＝iZZEkx＋jEy＋kqz，iE，jE，kq是沿Zx、y、z轴的单位矢量，对任一矢量AW有×AW＝CurlAW，kAW＝DivAW；DW为电位移，Bq为磁感应强度，Eq和HW分别为电i场和磁场强度，jY为传导电流密度，ρ为自由电荷密度。

Company Profile Beijing Xinyu win equipment limited liability company operating mainly in the production and domestic and international advanced testing equipment, instrumentation, and diagnostic tools, as well as introduce advanced test, measurement of new technology for operating purposes. A: electrical fire, building fire detection and public safety facilities, equipment detectors B: lightning protection, lightning protection device detection equipment, mine detection device safety box C: Fire Fire Safety Inspection and Testing equipment, and investigate the cause of the fire equipment, police station fire alarm Services and equipment D: fire inspection and fire investigation equipment boxes, fire investigation kits, fire detection equipment to determine the scene Product E: Fire Engineering Detect boxes, cartons Detect building fire service installations, fire detection electrical box F: Airport Fire fire inspection equipment, subway Fire Safety Detect Box G: boilers, pressure vessels and special equipment, elevator equipment Detect H: Victoria seized power telecommunications equipment boxes, mechanical state patrol boxes I: Detect safety boxes, traffic accident investigation boxes, property management Detected me J: Public environmental hygiene Detect boxes, boxes of food safety at the scene detection, occupational health care at the scene Detect boxes, cartons Detect Radiological Protection at the scene, the situation of sanitation and disinfection Detected me, health production supervisor at the scene seized me K: Ultrasonic leak detector, ultrasonic spectrum analyzer, ultrasonic full-function fault detection system L: fire using infra-red thermal imaging, infrared imaging system for industrial use, the security-type infra-red thermal imaging M: Energy Conservation Supervision and Testing Instruments instrument N: Private Product: 3 1/2- 8 1 / 2 handheld / desktop Digital Multimeter, cross-DC clamp level pressure ammeter, temperature gauges, tachometer, digital megohm table, grounding resistance tester, desktop multimeter, digital frequency meter smart, figure synthesis / function signal generator, desktop digital electric bridge, oscilloscopes, infrared thermometer, vibrometer, digital DC regulated power supply, 5 1 / 2 hand-held multi-function calibrator field process instrumentation. O: agent Products:, infrared thermometer, infrared, ultrasonic full-function fault leakage / discharge detection device, flammable / toxic gas detector, harmonic power quality analyzer, portable ultrasonic flowmeter, insulation / Ground Resistance Tester, temperature, current / voltage, the process of signal, thermal resistance / thermocouple, pressure, loop calibrator, such as electronics, telecommunications, electricity, petroleum chemical industry, safety inspection, steel smelting, public environmental protection, fire detection Secret rescue, fire detection equipment, special equipment testing, military field equipment dedicated monitoring equipment and tools.

公司简介北京新宇胜利仪器有限责任公司主要以生产和经营国际，国内先进的检测仪器仪表和设备诊断工具以及介绍先进的测试，测量新技术为经营宗旨。A：消防电气、建筑消防设施检测和公共安全侦检仪器设备B：防雷、避雷装置检测仪器设备、防雷装置安全检测箱C：消防防火监督检测装备、火灾原因调查装备、公安派出所消防警务装备D：防火检查与火灾勘查仪器箱、火灾勘查工具箱、消防产品现场判定检测仪器E：消防工程检测箱、建筑消防设施检测箱、消防电气检测箱F：机场消防防火检查仪器设备、地铁消防安全检测箱G：锅炉、压力容器和特种设备、电梯检测仪器H：电信电源维检仪器箱、机械状态巡检箱I：交通安全检测箱、交通事故勘查箱、物业管理检测箱J：公共卫生环境检测箱、食品安全现场检测箱、职业健康监护现场检测箱、放射防护现场检测箱、卫生消毒状况检测箱、健康品生产现场监检箱K：超声波泄漏检测仪、超声波频谱分析仪、超声波全功能故障检测系统L：消防用红外热像仪、工业用红外热像仪、本安型红外热像仪M：节能监督检测仪器仪表工具N ：自有产品：3 1/2-8 1/2位手持/台式数字多用表，交、直流钳形高低、压电流表，温度仪表，转速表，数字兆欧表，接地电阻测试仪，台式多用表，数字智能频率计，数字合成/函数信号发生器，台式数字电桥，示波器，红外测温仪，测振仪，数字直流稳压电源，5 1/2位手持式多功能现场过程仪表校验仪。O：代理产品：，红外测温仪，红外热像仪，超声波全功能故障泄漏/放电侦测仪，可燃/有毒气体检测仪，电力质量谐波分析仪，便携式超声波流量计，绝缘/接地电阻测试仪，温度、电流/电压、过程信号、热电阻/热电偶、压力、回路校验仪等电子、通讯、电力、石油化工、安全检查、钢冶、公共环保、消防特勤侦检救援、消防检测设备、特种设备检测、军事领域的专用仪器监测设备与工具。

The 3-dimension solid model of the 8th turbine rotor blade of some type aero engine is constructed in software UG, and the numerical calculation region of stream field in ECM is set up in special flow field calculation software FLUENT based on the principle of hydrodynamics. The distribution of 6-dimension forces is got after numerical calculation, and the equation between 6-dimision forces and interelectrode gap is set up.

基于流体力学原理，用UG造型出某型航空发动机8级涡轮转子叶片，用流场计算软件FLUENT构造电解加工中叶片的流场计算区域，经数值计算得到六维力的分布，并从理论上建立六维力与间隙之间的关系方程式，为后续试验研究提供了参考依据。

Based on the 2-D distribution of channel impurity, the distribution of 2-D electric field and 2-D interaction potential, which is caused by the interaction between the ionized impurity in the depletion layer and radiation induced positive spatial charge, is analyzed by using image charge method. Resolving Poisson equation, the mobility expression of N-type and P-type non-uniform channel MOS and the mathematics expression of the threshold voltage model of DMOS are obtained.

基于沟道杂质的非均匀分布，借助镜像法导出非均匀沟道辐照正空间电荷和沟道中电离杂质的二维场及其作用，给出非均匀沟道DMOS器件辐照正空间电荷与沟道杂质的二维互作用势。

In order to get the more accurate data of atmospheric capacity about this type of area, such as Yueyang, this paper analyzed the characteristics of Yueyang meteorology, gathered the features of atmospheric pollution sources, worked out the main problems in environmental protection. In addition, we analyzed the rule of atmospheric transport and diffusion, and took the Frequency of lake and breeze to modify the data of atmospheric capacity of Yueyang, which was achieved by A-P index, and compares the modified data of atmospheric capacity with the data of atmospheric capacity achieved by multi-source. The results indicated that according to the fact of lake and breeze, taking the frequency of lake and breeze to modify the data of atmospheric capacity of the field with stable lake and breeze, which is achieved by A-P index, made the atmospheric capacity more accurate. Accordingly, the result could be more reliable if the modified data is taken to calculate the atmospheric capacity when we assess the impact on the environment of the field with stable lake and land breeze.

为准确地求得这一类型地区的大气环境容量，本文研究了岳阳市城区大气环境的主要特点，收集大气污染源数据并进行分析，查明岳阳市城区主要环境问题，分析岳阳市城区主要大气污染物的迁移转化规律，对A-P指数法求得的岳阳市大气环境容量值用湖陆风频率进行修正，并将修正后的大气环境容量与多源模型(区域大气环境容量计算模型)求得的大气环境容量进行对比，得出结论：根据湖陆风环流情况下的大气扩散方式，对有稳定的湖陆风环流的地区，采用湖陆风频率修正A-P指数法求大气环境容量，进一步提高了计算的准确性。

On the ANSYS/Emag platform, a macro code which can calculate the magnetic field and reactance of shell-type air-core reactor is made. Furthermore, the outer boundary of the field and the control strategy of element size is determined.

以ANSYS/Emag为平台，编制了计算壳式空心电抗器磁场和电抗的专用宏命令程序，确定了场域模型外边界选择和剖分网格控制方法。

The wall-climbing micro-robot that is discussed in this thesis is a special type of robot, which is driven by means of permanent magnetic field and mutual effect of electromagnetic field, has the characteristics of small volume and flexible control, can convenient enter narrow space, pipeline and big magnetizer where it is difficult for people to reach.

本文研制的微小步行爬壁机器人是一种特种机器人，它采用永磁场和电磁场相互作用的驱动方式，具有体积小，驱动控制灵活的特点，便于进入狭小空间、管道以及人难以到达的导磁面，完成各种检测工作。

In the field of industry control , Many machine mailing address are used by the majority of supervisory system to complete the data acquisition and the management duty. In order to save the movement cost the host from the type structure is used generally by us. The RS-485 standard is designed by this paper to carry on the network system of the host from type many machine correspondence. It is possible to simplify the system structure greatly and reduce the cost of developing system .

摘 要：在工业控制领域，大部分监控系统均采用多机通信方式完成数据采集、管理任务，为节约运行成本普遍是采用主从式结构，本文设计采用RS－485标准进行主从式多机通信网络系统可大大简化系统结构，降低系统开发成本。

Based on the analysis of the function of intelligent motor monitor required by the motors, a type of intelligent motor monitor has been developed supervising the motors on manufacturing field, the distributed supervision and management for the field operation motors are performed with the motor control center.

本文在分析电动机对智能监控器功能要求的基础上，开发了一种用于监控和保护工业生产现场电动机的电动机智能监控器，实现了控制中心对工业生产现场电动机的全分布式智能化监控和管理。

Cultivation characteristics of Nandina domestica of cultivated type and wild type were systematically studied through field experiment and comparative analysis, using Nandina domestica populations from 13 different districts of Hunan Province as samples.

方法］以湖南省13个不同地区的南天竹种群为试样，采用田间试验和对比分析的方法，对栽培型与野生型南天竹的栽培性状进行了系统研究。

In this paper, the requirement analysis, design and implementation of the system are introduced in detail.

此论文详细介绍了系统的需求分析，系统设计和具体实现。

In the context of economic globalization is increasingly deepening, China's economy can not be spared.

在经济全球化日益加深的背景下，中国经济不可能做到独善其身。