电流的

Focusing on the normal inverter's dynamic characteristics which can not satisfy the requirement of reducing current quickly before the time of rupturing of the bridge, a new current wave controlling method for short circuit transfer CO 2 welding using satiable inductor is put forward in this paper.

本文针对普通CO2焊逆变电源的动态性能不能满足短路过渡CO2焊波控方法的要求，焊接电源难以实现在液桥爆断前迅速减小电流的问题，提出了一种在波控方法中采用可饱和电感作为CO2逆变焊机续流电感的方案。

Making use of the change criteria of curl current during the dynamic movement of DC electromagnetic mechanism,the sequential logic model was optimized.Based on arcless switching circuit,the working time and heat of power electronic device was greatly reduce...

利用直流电器电磁机构动态过程中线圈电流的变化规律，优化了继电器的时序控制模型，在系统无弧通断电路的前提下，大大缩短了电力电子器件的工作时间，进一步减小发热，并通过实验验证。

The design and make of a simple electric arc plasma generator;2. Mathematics expressions of arc curr en t are deduced considering the circuit resistance of the arc furnace,based on the assumption that electric arc voltage follows rectangle wave,and the elect ric parameters related to continuous and non-continuous electric arc are obta ined.

推导了在假定电弧电压为矩形波条件下，电弧电流的瞬时值数学表达式，明确了电弧连续性与随操作参数I/Is之间关系，推导中考虑了线路电阻的影响；分别求得了电弧连续与不连续情况下的无量纲电气参数；得到了电弧连续性准则；给出了计算临界功率因数的线性高精度近似计算式。

He omitted mention that the magnetic force in Ampere's (1825) important invention, the solenoidal electromagnet, is caused by currents in the loops of his coils, which are transverse to the direction of magnetic force.

他没有提及该磁力在安培的（ 1825 ）的重要发明，螺线管电磁铁，是造成电流的循环，他线圈，这是横向，以方向的磁力。

The air itself seemed to crackle and sputter as a vortex of energy began to swirl.

那儿的空气竟然无预警地开始发出细碎的爆裂声和电流的劈啪声，就像是一股强劲的能量漩涡在那旋绕著。

The surface current distribution of patch is changed because of the stub, so the operating frequency is decreased, the bandwidth is broadened, the return loss in operating range is decreased.

由于短截线的存在，改变了贴片表面电流的分布，由此降低了天线的频率，增大了工作带宽，降低了天线工作频段内的反射损耗。

An effective method for improvement transient response in pulse-width modulation current source converter is studied.

给出了单相和三相变频器的实验结果，与采用其他方法的变频器相比，该方法的变频器电源电流的暂态响应得到了有效改善。

Compensating devices have developed from Synchronous Adjustive Phasic Device, Static Var Compensator to Advanced Static Var Generator nowadays. Today, Trinomial Three Lines pattern Static Var Generator is grown up. But the anisomerous problem becomes more and more serious.

目前用于三相三线制的静止无功发生器已经较为成熟，但随着不对称负荷问题的日益突出，对零线电流的补偿显得十分重要，这就要求使用三相四线制的静止无功发生器。

DBD is a newer technology obtaining non-equilibrium plasma than before. It can restrain current from augmenting unboundedly,by using dielectric. It also can eliminate sparkle discharge and arc discharge in discharge clearance.

不同于以往的放电形式，是由于电介质的存在而抑制放电电流的无限制增大，从而阻止放电间隙产生火花放电或弧光放电，并且电场中高能态的电子数量多。

This paper lays its emphasis on the latter by presenting a state optimal space vector control strategy on the basis of using a modified synchronous detection method to generate the reference current.

本文在采用改进的同步检测法产生指令电流的基础上，提出了一种基于状态优化的空间矢量控制方案，主要研究滤波器中变流器的控制策略问题。

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。