设备是配置为二线制或四线制的系统吗？
首先，本文针对三相四线制的电流检测方法进行了研究。
First of all, current detection method for three-phase four-wire system is researched.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
制陶器最重要的工具是工匠们自己的双手，但有时他们也用些别的工具，如绳圈、木模、素线、海绵等。
The most important tools potters use are their own hands; however, they also use wire loop tools, wooden modeling tools, plain wire, and sponges.
是目前中国境内乃至亚洲地区最大的制线企业。
At present it is the largest sewing thread manufacturer in China and even in Asia.
一种织物编织法，用双层线彼此交叉绕制，产生出和编篮的图案相似的式样。
A textile weave consisting of double threads interlaced to produce a checkered pattern similar to that of a woven basket.
分析说明了二线制变送器的恒流源设计及变送器的整机电路。
The design of the constant current source in two-wire transmitter and the integrated transmitter circuit are analysed.
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介绍了一种基于DSP的三相四线制系统混合型电力滤波装置。
A new DSP based hybrid power filter designed under the condition of three-phase four-wire system is presented.
本文首先给出了三相三线制并联型有源电力滤波器的系统构成以及工作原理。
Firstly, this thesis has presented the system structure and operation principles of three-phase three-wire parallel APF.
是由聚酯亚胺树脂涂制而成、热级为180的漆包铜圆线。
EIW(QZY) is a kind of enameled round copper wire, thermal class 180, coated by polyesterimide resin.
构建了一套智能二线制阀门定位器的样机。
A prototype of a smart two-wire valve positioner has been designed and constructed.
描述了一种核探测器二线制电路的原理和性能，并应用于核料位计中，与传统的多线制探测器相比有明显的优越性。
The principle and function of a kind of two lines system circuit in nuclear detector has been described, and it has been applied in nuclear level gauge.
二线制是运用最广泛的通信线路之一。
The two-wire system is one of the widely used communication lines.
本文介绍了在实现三相四线制有源电力滤波器时所采用的两种不同的主电路结构及其控制方法。
In this paper, two types of main power circuits and their control methods are introduced when constructing active power filter in three phase four wire system.
基于可补偿引线电阻影响的三线制铂电阻测量电路提出了一种高精度测温方法。
Based on a 3 wire platinum resistor measuring circuit, in which the lead wire resistance can be compensated, a high precise temperature measuring method is stated.
介绍了M - BUS二线制总线，它是一种用于远程仪表读取数据的欧洲标准，主要用于耗能测量仪表。
The M-BUS, the two wire bus, is the European standard for remote instrument data readout system. It mainly used for energy consumption meters.
本文以三线制npn式开关量输出型传感器为例，介绍了传感器的负载驱动单元的结构特点及驱动方式。
Taking a sensor of switch - output type NPN for example, its structural characteristic of the load driving unit and the driving pattern is introduced in this paper.
首先介绍了现有教材中已给出的三相电路功率的测量方法，进而提出了三相四线制三相电路功率测量的另三种接线方法。
Firstly, the existing methods of the three phase power measurement in the teaching materials are introduced. And then another three connection methods are suggested for three phase four wire circuits.
另外，三相四线制有源电力滤波器能有效地抑制零线电流，并能有效地解决系统的不对称问题。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
通过试验验证，该检测方法能够很好的实现对三相四线制系统中的无功和谐波电流的检测。
The experimental results indicate that this method can be used to detect the reactive power and harmonic current exactly in three-phase four-wire system.
该线是由聚酯亚胺树脂涂制而成的、热级为180的铜包铝漆包圆线。
This is a kind of enameled Cu-AL round wire, thermal class 180, coated by polyester resin.
生产线可实现卡车底盘纵梁及车厢边框的冲制，具有精度高、生产周期短、灵活性强等优点，并可大大减少生产环节的库存量。
The line can punch the truck chassis side-member and side panel of carriage with high precision short period and high agility and reduce the storage in production greatly.
因此，防止三相四线制配电回路断零事故的发生，具有更广泛的意义。
So, it is significant to prevent the occurrence of faulted neutral line within the circuit of three phase and four line system.
生产线可实现卡车底盘纵梁及车厢边框的冲制，具有精度高、生产周期短、灵活性强等优点，并可大大减少生产环节的库存量。
The line can punch the truck chassis side-member and side panel of carriage with high precision, short period and high agility and reduce the storage in production greatly.
采用吸附仪测定了所制负载金属活性碳纤维的吸附等温线，然后用不同理论方法对孔径分布进行表征分析。
The pore distribution of metal coating activated carbon fibers were analyzed by HK, BJH and Dubinin theories from the nitrogen adsorption isotherms measured by auto adsorption meter.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
污水处理站供电由就近的生产接入，生产设备用电及照明采用380/220三相四线制供电。
The power supply of wastewater treatment is connected from the nearest access. Production electricity and lighting equipment adopt 380/220 three-phase four-wire power supply.
信号预处理系统还包括温度信号提取电路，通过铂热敏电阻实现对温度信号的提取，采用了三线制恒流源测量法。
The signal pre-processing system also has circuit to extract temperature signal via platinum thermistance, in which three-wire system and constant current measurement method are adopted.
信号预处理系统还包括温度信号提取电路，通过铂热敏电阻实现对温度信号的提取，采用了三线制恒流源测量法。
The signal pre-processing system also has circuit to extract temperature signal via platinum thermistance, in which three-wire system and constant current measurement method are adopted.
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