电流

Our method provides a flexible means to control the ion current which has been very difficult to do. A lower current also reduces the requirement on the power supply as well as other instrumental concerns such as secondary electron emission and x-ray shielding, both of which are very serious for high-voltage implantation.

我们的方法提供了一个简易可行的控制离子电流的手段，较低的离子电流对负高压功率要求降低，同时也减低了对二次电子发射和x射线屏蔽的要求，这在高电压注入中尤为突出。

When the welding current is added, on the one hand,the section of arc will more or less increase, so the fusion width will increase; on the other hand, the depth of arc crater will increase.

焊接电流增加时，一方面是电弧截面略有增加，导致熔宽增加，另一方面是电流增加促使弧坑深度增加。

This is done by sensing the peak current through the winding via a current-sensing resistor R , effectively connected in series with the motor winding.

这是通过遥感的峰值电流通过线圈通过电流感应电阻，有效地串联的电机绕组。

The method of current control is used to reduce short circuit and stray corrosion.

从电流信号的角度分析短路现象与杂散腐蚀现象，提出了电流阀值控制方案，并进行了试验研究。

Simulation results show that current waveforms of electric power system are symmetric and pure sine curve, reactive and harmonic are compensated. Balance transforms, detecting methods and proposed cophase power supply are verified to be true and feasible.

仿真结果表明平衡后的电力系统侧电流波形为三相对称的纯正弦波形，完全补偿了无功与谐波，证明了平衡变换方式和滤波器指令电流检测方法的正确性，验证了所提出的同相供电方案的正确性和可行性。

Through the similar comparison operation conducted by standard self-correlation function formed with sinusoidal current the short circuit current and the inrush current can be distinguished by the magnitude of similarity coefficient.

这里，我们把启动电流还是短路电流看作随机信号，对数字信号相关函数原理的取样数据进行了分析以及对取样数据的自修正功能进行了计算。

Crystal sinusoidal harmonic vibration in order to change the current form, this change is the current clock signal.

晶体的震动以正弦调和变化的电流的形式表现出来，这一变化的电流就是时钟信号。

So, When the power system is in transient, the sliding mode control rule is chose directly to make transient component decrease quickly, and when the power system is in stability, the direct current control method based on voltage space vector method is imported to make the error current reduce to zero by inches and avoid surge.

为此，当系统处于暂态时，论文直接选择滑模控制率使暂态分量迅速减小，当系统处于稳态时，引入基于电压空间矢量的直接电流控制方法，使误差电流趋于0缓慢变化，在有效补偿系统无功的同时，提高了系统的动态特性，并大大降低了系统振荡的可能性。

The sliding mode control rule which can maintain the system stability is deduced when choose I Sq=0 to construct switching surface. However, the sliding mode control rule has control quantity only when the tracking error is not in zero.

论文以无功电流I Sq=0构造切换曲面，推导了使系统保持稳定的滑模控制率，但是该控制率只有在电流跟踪误差不为0的情况下才有控制量产生，在误差为0的情况下没有控制量产生。

The control structure selects the compound adjustment method which by the electric current, the rotational speed and the position three links is composed, electric current link uses the PID control algorithm, but the rotational speed and the snap ring use the fuzzy - PID intelligence control algorithm.

控制结构采用由电流、转速和位置三环组成的复合调节方式，其中电流环采用PID控制算法，而转速和位置环采用模糊-PID智能控制算法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。