电流的

Studies were carried out to investigate the response of different organic pollutants to streaming current when the raw water was coagulated, the test sensitivity of streaming current and the effect of set point of the control system.

对流动电流混凝投药控制技术应用于受有机物污染的水中进行了试验，研究了有机污染物对流动电流响应混凝剂投量的变化规律、流动电流检测灵敏度、以及控制系统的给定值的影响，初步探讨了流动电流混凝投药控制系统在受污染水源水中的适用性问题。

By adding an equivalent harmonic impedance in the branch circuit of power grid, this HAPF could force all the harmonic currents flow into passive power filters, which resulting in eliminating harmonic contamination more effective. And using the capacitive feature of PPF in the fundamental frequency, this HAPF could compensate fixed-capacity reactive power without increasing APF's burden. Moreover, in order to decrease APF's cost, the fundamental voltage will largely be endured by capacitor in view of the series resonance circuit tuned at the fundamental frequency, so the APF just bears little harmonic voltages.

其基本工作原理是：有源部分等效于在电网支路中串联了一个谐波阻抗，该谐波阻抗对基波电流不起作用，而对谐波电流产生很大阻碍作用，迫使谐波电流流入无源滤波器，从而达到滤除谐波的目的；同时新型注入式混合有源滤波器还充分利用了无源滤波器的无功补偿功能，在不增加有源部分容量的前提下，可以提供一定容量的无功功率；由于有源部分承受的电网基波电压不大，也没有基波电流流入，因此逆变器容量小，初期投资较小。

The amplifiers chosen must be compensated for unity-gain operation and R6 and R7 must be chosen to minimize output errors due to input offset current.

注释 2：(NE5532 注) R4U i =0 R3 首先，对节点处的电流讨论是没有意义的，流入节点的电流一定等于流出节点的电流，再者，I3 与 I4 不是等大反相的关系，分析如下： 40 An Applications Guide for OP Amps 由于此时 OPA1 处于反相放大状态，其输出电压 U o1 压误差按照设计思路，此时 A2 的输出应该等于 U o1 ，则电流方向如上图。

Because the magnetoelectricity characteristic of TA is not linear, huge short-circuit current or large nonperiodic current may make the TA enter the saturated state, which cause the exportation current of the TA very small, making the busbar differential current very large.

母线区外故障时，由于带铁心TA 激磁电感的非线性特性，强大的短路电流及较大的非周期分量都可能使TA 进入深度饱和状态，此时TA 的励磁阻抗将变得很小，一次电流大部分流入励磁支路，导致TA 输出电流很小，使得母线保护差动电流很大，如果不采取一定的措施，极易发生误动。

In this paper,surface line-charge method was taken to calculate the magnetic distribution in a 160kA large prebake anode aluminum reduction cell in Guizhou Aluminum Smelter.

应用表面磁荷法对贵州铝厂 16 0kA大型预焙阳极铝电解槽的磁场进行了计算，通过对电流分布均匀情况下和考虑了实际电流分布情况下的电解槽磁场的比较，可以看出，阳极和阴极电流分布对铝电解槽磁场分布具有绝对的影响，只有在考虑了阳极和阴极电流实际分布的情况下，才能准确地计算出铝电解槽的实际磁场分布。

Compared with the current waveform of current regulator parameter unchanged based on linear modal,the overshoot and torque pulsant of current waveform which using current regulator parameter changed control scheme were smaller.

将测得的电流波形与基于线性模型的电流调节器控制下的电流波形比较，采用本文的控制方案测得的电流波形超调量小，转矩脉动小，控制效果良好。

The results showed that the W content in the electrodeposits rose with the increasing of cathodic current density in the solution containing ammounium citrate as complexing agent,whereas the current efficiency remained approximately constant. When the current denisity was higher than 15 A/dm2, the W content in the alloy was not obviously changed, but the current efficiency remarkably decreased.

结果表明，在以柠檬酸铵为络合剂的镀液中，沉积层的W含量随电流密度的增大而增加但电流效率变化不大，当电流密度超过15A/dm2后，镀层的W含量不再发生明显的变化而电流效率却明显降低。

Operational Tran conductance lifers and Grounded actorhas become one of the most important methods to implement integrated continuous-time filters. Operational Tran conductance Amplifierscan transfer input voltage into current to output,and control or change output current within large range by an external controlling current of amplifier. Most articles consider OTA as a voltage-mode circuit component and give voltage-to-voltage transfer function of all having been implemented filter circuits,i.e. The input signal and output signal of filter circuits are voltages .

运算跨导集成运算放大器OTA ( Operational Tran conductance Amplifier 以下简称跨导运放)的功能是将输入电压转换为电流输出，并通过外加偏置电流控制运放的工作电流，从而使它的输出电流在较大范围内变化，而在大多数文献中，器件都被作为电压模式元器件使用实现的各种滤波电路都是按传送电压比给出的，即滤波电路输入信号和输出信号均为电压信号。

The functions of the differential current sensor with magnetic modulation are analyzed when applied to the high voltage cabinet of A type metro vehicle .

分析了磁调制式差动电流传感器在A型地铁车辆高压柜电路中的功能，阐述了高导磁环形镍铁合金铁心线圈构成的差动电流传感器的电路原理，并简要介绍了该差动电流传感器的外形结构和材料特点，列出了传感器的主要技术参数，运用证明该差动电流传感器工作性能可靠、稳定。

Considering the skin effect and skin depth, a thin wall model and a thick wall model are derived creatively with different frequencies of discharge currents, which are used to study the relation between the spark location and the potential difference for a cuboid electrode.

本文从放电电流为任意函数入手，阐述了电极电位差法的检测原理，首次利用傅立叶级数推导了电位差与放电时间的关系，证明了放电电流为阶跃函数时，电位差与放电时间成指数关系；当放电电流中含有高频振荡时，电位差与放电时间的关系为指数曲线上叠加相移后的高频振荡；根据放电电流频率的不同，考虑到趋肤效应和趋肤深度，首创了薄壁模型和厚壁模型，研究了长方体电极下表面二维放电点位置与电位差的关系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。