Discussion on advantages of MF inverter DC resistance welding;
中频逆变直流电阻焊优势探讨
The design and application of the KYZ-250/550 type dc impulse speeder of stringing locomotive;
KYZ—250/550型直流架线电机车脉冲调速器的设计与应用
DC energy conservation control transform of hoist AC contactor;
提升机交流接触器直流节能控制改造
Aiming at the direct current(DC) power source system of the electric power system,introduces systematically the diagnosis technology of the direct current ground fault,analyzes several diagnosing methods of the direct current ground faults.
针对电力系统的直流电源系统直流接地故障的诊断技术进行介绍,对几种直流接地故障诊断方法进行了较为详细的分析。
Response of direct current circle in a cased borehole and its application research;
套管井中直流环的响应及其应用研究
The Differences and Similarities between Alternating Current Contact or and Direct Current Contactor and the Replacement of Each Other;
交流接触器与直流接触器的异同及代换使用
Briefly narrating the direct current system configuring and features of the middle and small sized hydropower station;
简述中小型水电站直流系统的配置及特点
HVDC Partial Discharge Detecting Instrument Used for Storage Capacitors;
储能电容器直流局部放电检测装置
Analysis of Three Gorges output HVDC transmission system operation in 2005;
三峡送出直流输电系统2005年运行情况分析
DC Transient Overvoltage of Lingbao BtB HVDC Converter Station;
灵宝换流站直流暂态过电压研究
Two parallel-placed needle valves with opposite flow direction referred as two-valved configuration instead of traditional single-valved configuration as double-inlet are adopted to control DC flow and are proved to be a successful way to decrease the refrigeration temperature of a single-stage pulse tube cryocooler below 20 K.
并联双阀双向进气模式是采用了两个并联排列、箭头指示方向相反的阀门来替代单一阀门的双向进气模式,可对脉管制冷中的直流进行有效控制,是使脉管制冷机单级情况下达到低于20 K温区的有效手段。
An experimental investigation on DC flow suppression in a single-stage G-M type pulse tube cooler is made.
开展了单级G-M型脉管制冷机直流抑制实验研究,考察了直流流动对制冷机性能的影响,估算了不同制冷温度下制冷机循环的需气量,采用两个并联排列、指示箭头方向相反的阀门,称之为并联逆向双阀双向进气结构对直流进行抑制,成功地解决了传统单阀双向进气结构脉管制冷机存在的直流问题。
Experimental investigation on DC flow suppression and refrigeration characteristics of a high-performance single-stage GM-type pulse tube cooler has been undertaken.
从直流抑制角度出发 ,开展了高性能 G-M型单级脉管制冷机的研究。