At the same time, problems of the DC grounding system are valuable because it is not only significant in HVDC operation but also affects the AC system nearby.
同时，直流接地极关系着高压直流输电系统的安全运行，对于附近的交流系统也有影响，其中的一些问题也十分值得研究。
AC argon arc welding is used for the repair according to the leakage check and welding characteristics of aluminum materials, hardware device is strengthened, operation criterion are perfected.
采用的查漏方法，根据铝材的焊接特点选择交流氩弧焊进行修复，并采取增加硬件设施和完善操作规范的预防措施。
AC Milan and England star David Beckham has confirmed that the operation he underwent on his injured Achilles tendon has gone well and he is looking forward to beginning his recovery.
AC米兰和英格兰球星贝克·汉姆已经确定了他的脚踝手术十分成功，比期待尽快恢复。
The paper analyzes the operation of electronic gear in the digital AC servo system, introduces the principle of the electronic gear.
文章分析了数字式交流伺服系统中的电子齿轮环节的作用，介绍了电子齿轮的基本原理。
The ideal method of attraction and anti-attraction matching curve was gained by variable current control, so intelligent operation of AC contactor was realized.
通过采用可变电流控制获得理想吸、反力配合曲线的方法，实现交流接触器的智能操作。
AC vector inverter control, intelligent touch-screen operation.
交流矢量变频控制，触摸屏智能操作。
The article presents L6598 inner structure, its lead functions, unit circuit operation philosophy and its circuit in the wide range AC/DC adapter.
文中介绍了L6598内部结构、引脚功能、单元电路工作原理及其在宽范围AC/DC适配器中的应用电路。
According the operation mechanics of the SCES system, its main circuit containing bi-directional DC-AC-DC converter was designed and its unified model was built.
从超级电容器储能系统的运行机理出发，设计了含双向DC - AC - DC变换器的超级电容器储能系统主电路结构，并建立了其统一模型。
As backup power supply of the DC system, the residual capacity of battery effected safe operation of DC system directly when ac power failure occurs.
蓄电池作为直流系统交流停电时的后备电源，其剩余容量直接影响了直流系统的安全运行。
And the operation of various gas-shielded welding, ac and DC arc welding machine, stud welding machine, air plasma cutting machines and other ancillary products.
且经营各种气体保护焊机、交直流氩弧焊机、螺柱焊机、空气等离子切割机等配套产品。
Preferably, both electrodes operate on a DC or AC power supply, preferably a battery, while the discharge lamp operates in the second mode of operation.
优选地，两个电极在DC或AC电源下运行，优选为在电池下运行，同时放电灯运行在第二操作模式。
The hardware of the system is composed of Q-series PLC, graphic operation terminal F970GOT, intelligent positioning module QD75M4, and AC servo drive unit from Mitsubishi.
系统硬件采用三菱公司Q系列plc、图示操作终端F970GOT、智能定位模块QD 75 M4及交流伺服驱动单元。
By the use of intelligent operation in make and break process of ac contactors, the contacts erosion will be reduced, which lengthens causes the electrical durability of the contactor.
通过对接触器通断过程的智能操作，可以减少触头的电弧侵蚀，并提高接触器的电气寿命。
For the load of equipment, such as the operation of complex features, using the main exchange Frequency vector control technology, using advanced car AC servo control technology.
针对该设备负载大、运行情况复杂等特点，主轴采用了交流变频调速矢量控制技术，小车采用了先进的交流伺服控制技术。
AC line input or battery operation - portable for a variety of test locations.
AC线路输入或电池操作-可携式的测试不同地点。
It's operation structure is spring store type, can using AC or DC operate, and also can use handle operation.
本系列产品的操动机构为弹筑簧储能式，可以用交流或直流操作，亦可用手动操作。
Because of the output of the UPS (or Inverter) is AC, its parallel operation is more difficult than DC supplies.
由于UPS(或逆变器)的输出是正弦交流电，它的并联运行比直流电源复杂的多。
As for accommodative esotropia, the operation method was decided by AC/A, fusion faculty, and the angle of esotropia when wearing full-correction spectacles for hypermetropia;
对调节性内斜视根据AC/A（调节性集合和调节的比率）比值、融合力的大小及戴全矫远视镜后出现的内斜度数来确定手术方法；
A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.
提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构，并详细阐述了工作原理、控制方案和设计方法。
The operation modes of the interleaved double-transistor flyback converter have been analyzed. The DCM small signal AC model using the averaged switch method has been built up.
本文分析了两路交错并联双管反激变流器的工作模式，采用开关平均法建立了电流断续模式（DCM）下的变流器小信号模型。
Reactive power is a crucial factor for the design and operation of ac power systems, and is closely bound up with the safety, stabilization, and economical operation of the power system.
无功功率是交流电力系统设计和运行中的一个重要因素，它与电力系统的安全稳定和经济运行息息相关。
The typical application of AC inverter in master operation of iron and steel industry was introduced.
介绍了交流变频装置在钢铁工业主要工序中的应用典型。
A novel drive system with high frequency AC pulse density modulation for electric vehicles is proposed, and its operation principle and control method are studied in detail.
提出了一种用于电动汽车的高频交流脉冲密度驱动系统并阐述了系统的工作原理和控制方法。
The operation of 3 level AC chopper and 3 level matrix converters are introduced, the control method applied to 3 level matrix converter is presented.
文中详细分析了3电平交流斩波电路和3电平矩阵电路的工作原理，介绍了3电平矩阵电路所采用的控制方法。
The operation of 3 level AC chopper and 3 level matrix converters are introduced, the control method applied to 3 level matrix converter is presented.
文中详细分析了3电平交流斩波电路和3电平矩阵电路的工作原理，介绍了3电平矩阵电路所采用的控制方法。
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