The dielectric constant decreased significantly under large DC bias level.
在较大的直流偏压场下，介电常数大幅度降低。
Since the DC current on each side is the same, the effective DC in the transformer core is cancelled, so there is no need to provide for a large DC component.
因为两臂的直流电路相等而方向相反，所以在变压器铁心中有效直流磁通是互相抵消的，所以不再需要巨大的直流元件。
The experience of designing the serial communication program between PC and 89c51 micro-controller for the speed control of large DC motor is introduced by some examples.
通过实例，介绍为大型直流电机调速系统开发PC机与89c51芯片之间串行数据通信的经验。
For the parallel inverter system without output isolation transformers, the difference of DC components of the output voltage can cause large DC loop-current among modular inverters.
对于无输出隔离变压器的逆变器并联系统，各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
For a parallel inverter system without output isolating transformers, discrepancy in DC biases contained in the output voltage of each module can cause large DC circulating current among inverters.
对于无输出隔离变压器的逆变器并联系统，各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
This requirement for large capacitance yields a power supply with less internal DC resistance; that is to say, one providing close to the performance of an ideal power supply.
这一规定出土了大量电容直流电源内部阻力较少；也就是说提供一个理想的表现接近电源。
If the AC voltage at the input is large, part of this signal is rectified, producing an error in the DC signal being measured.
如果输入端的交流电压很大，其一部分信号被整流，于是在被测的直流信号中产生了误差。
In this paper, a novel Zero voltage Transition soft switching techniques have been investigated for a PWM DC DC large boost conversion application.
介绍了一种新型的零电压转换软开关技术在大升压比PW M直-直变换器上的应用。
It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit, addition circuit, compare circuit and multiplication circuit etc.
介绍了用自平衡比较仪通过自校、加法、比较和乘法等校准线路实现直流大电流量值的绝对溯源。
The driving device adopts high efficiency, large torque, small volume DC brushless motor, the gear box adopts spiral gear running mode, the action is quiet, stable, durable, not easy to wear and tear.
驱动装置采用高效率、大扭矩、小体积d C无刷马达，齿轮箱采用螺旋齿轮运转模式，动作宁静、平稳、耐用、不易磨损；不惧高低温气候影响。
A control circuit for transition control in DC motor field excitation on large power shovel has been designed.
设计了大型挖掘机械直流电动机激磁电路的转换与控制电路。
Faced with this situation, we need to improve the situation of large consumption caused by a large generator, the problems that impact the life of DC electric drill collecting ring are discussed.
面对此情况，我们必须对直流电动钻机由无功功率大而引起的发电机功率消耗大的现状加以改进。对影响直流电动钻机集电环使用寿命的问题进行了探讨。
This paper discussed process, characteristics of the equipment and the operating effects of large sized pulse jet bag filter with long bag and low pressure in the cleaning of 100t DC electric furnace.
阐述了长袋低压大型脉冲袋式除尘器在1 0 0t直流电弧炉的除尘系统中的流程、设备特点及运行效果。
As the storage capacitor charged under DC and discharges in a short time, which form a high voltage and large current pulse.
储能电容器的工作过程是在高压直流条件下进行较长时间充电，然后在很短的时间放电，从而在负载上形成高电压、大电流的脉冲。
The paper discussed the method of using active large-power DC standard resistor to verify DC resistance tester and analyzed its error.
阐述了有源大功率直流标准电阻器检定直流电阻测试仪的方法，对该检定方法进行了误差分析。
The paper introduces the saturable magnetic circuit method to measure the DC resistance of low voltage winding of large-size transformer with a practical application.
介绍了一例用助磁法测量大型变压器低压侧直流电阻的接线、仪器、测试过程和测试结果，讨论了助磁法运用于实际应注意的一些问题。
The performances of the paralleled DC/DC converter system are seldom discussed when the differences of the paralleled modules are large.
本文着重对并联系统在参数差异很大的条件下的工作情况进行了研究。
The optimal design of HVDC control and protection parameters in the case of large-scale ac and DC power system network is a valid measure to ensure achieving good transient and stable performance.
对大规模交直流网络下的高压直流控制保护系统进行参数优化设计，是保证灵活交流输电系统暂态性和稳定性良好的重要手段。
To introduce the composition and working Principle of a thyristor rectifier unit of large power for DC EAF.
介绍一种单电极直流电弧炉用大功率晶闸管整流装置的组成和工作原理。
Among large cities, San Diego moved from 14th to 8th and San Antonio from 15th to 10th - with Cleveland and Washington. DC, dropping out of the top 10.
在大城市排行榜上，圣地亚哥从第14位上升到第8位，圣安东尼奥从第15位升到第10位，而克利夫兰和华盛顿特区却被挤出了前10位。
Conclusion Large dose of Astragalus could increase the DC induction of MNC and enhance the antigen presenting ability of DC in acute leukemia patients.
结论大剂量黄芪可提高急性白血病患者外周血单核细胞诱导生成dc的数量并增强DC的抗原呈递功能。
In DC transmission line construction design, current national standard of economical current density will under predictcd conductor section, resulting in large loss.
在直流输电线路工程设计中，如果按我国现行标准规定的经济电流密度选择导线截面，将导致截面偏小，损耗增大。
In order to obtain a more uniformity flow of the dc arc plasma, the large-scale arc hollow electrode plasma generator with an outer magnetic field is designed in this paper.
为了获得比较均匀的大面积直流电弧等离子流，设计了一种利用外磁场驱动电弧旋转的等离子发生器。
As the large fault current occurs in DC power system, the paper makes use of IGBT to design a new type DC fault current limiter.
针对直流电网短路故障时迅速产生的短路电流，利用IGBT器件为核心，设计出一种新型的直流短路电网限流装置并阐述了其工作原理。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
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