以下为句子列表：
英文: Abstract: This paper introduces the working pinciples of the electro-economizer,in which either alternating or direct current voltage can be input with the adaption to the operating coils of contactor, steady direct current is output,and voltage auto-conv
中文: 文摘:论述了与交流接触器操作线圈适配的交直流输入(操作)电压通用，恒直流输出，吸合与保持电压无触点自动转换节电器的工作原理。
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英文: Cerium-tungsten electrode, a new type of non-radiate electrode material invented in China, can not only replace the thorium-tungsten electrode in the case of low direct current and mini-scaled welding but also bears superior features over the latter.
中文: 铈钨电极是我国研制发明的新型无放射性的电极材料，在低电流直流条件下和小规格焊接可取代钍钨电极，并且有更优越的性能。
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英文: Qi-Kai Electric Company's main products are direct current panels, relay protecting panels, alternating current panels, mimic diagrams and charge-bypass chargers, moreover, we provide services for battery assembly.
中文: 奇凯电气公司主要生产直流屏、继电保护屏、交流屏、模拟屏、充电浮充电装置和名类蓄电池的组装。
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英文: Taking the fieldbus control system of 750 V direct current power supply system in Beijing metro line Batong as an example, the application of the PROFIBUS technique in the power supply system of metro is discussed, and the hardware and software structure
中文: 摘要以北京地铁八通线750V直流供电系统现场总线控制系统为例，介绍过程现场总线(PROFIBUS)技术在地铁供电领域的应用，论述系统的硬件、软件结构及其工作原理。
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英文: Taking the silicon diode as an example, through an analysis of the diode's current-voltage characters and the avometer circuit, the writer finds out the reasons for the differences in the amount when measuring the positive direct current equivalent resist
中文: 摘要以硅二极管为例，从二极管的伏安特性及万用表内部电路的角度，分析了用指针式万用表的不同欧姆档位测量二极管的正向直流等效电阻时，其值缘何不同。
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