查询词典 direct current

In order to reducing the cogging torque of PM brushless direct current machines,an analytical method,which was based on energy method and Fourier expansion,was proposed,which can express how to match slot and pole to reduce cogging torque.

为了削弱永磁无刷直流电动机的齿槽转矩，首先利用能量法和傅里叶分解法进行分析并提出了减小齿槽转矩的最佳极槽配合。

Hungry of the fox see the grape to up hang the radiant and extremely keen grape of a string, saliva direct current, and want to pick to eat, but again

饥饿的狐狸看见葡萄架上挂着一串串光亮剔透的葡萄，涎水直流，想要摘下来吃，但又

Hungry of the fox see the grape to up hang the radiant and extremely keen grape of a string, saliva direct current, and want to pick to eat, but again Can not take off.

饥饿的狐狸看见葡萄架上挂着一串串晶莹剔透的葡萄，口水直流，想要摘下来吃，但又摘不到。

Fox is with the grape Hungry of the fox see the grape to up hang the radiant and extremely keen grape of a string, saliva direct current, and want to pick to eat, but again Can not take off.

狐狸和葡萄饥饿的狐狸看见葡萄架上挂着一串串晶莹剔透的葡萄，口水直流，想要摘下来吃，但又摘不到。

With the development of the micro-electronic fabrication, the technology of the direct current glow discharge is applied in much fields.

正是由于直流辉光放电等离子体源的广泛应用，对其需求与日剧增，因此对其放电生成等离子体源特性的研究有着非常重要的意义。

Then analyses the principle of direct current moment electromotor and builds the mathematical model and gives the block graph of transfer function and studies the PWM control strategy.

然后对直流力矩电机工作原理进行了分析，建立了直流力矩电机的数学模型，给出了直流力矩电机传递函数框图，研究了直流力矩电机的PWM控制方式。

Impact of ground wire in HVDC transmission line on direct current flowing into neutral point of power transformer .

输电线路地线对流入变压器中性点直流电流的影响。

Objective: To observe the curative effect of direct current introducing calcium ion to treat hydrofluoric acid burns.

目的：观察直流电钙离子导入治疗氢氟酸烧伤疗效。

The measurement is simulated by ""regular icosahedron "" method, utilizing the direct current moment electric motor and the photoelectrical axis angle encoder, the rotation of the shot carrier and the CCD camera is completed, and can orientation the rotating angle, so that the system can make the CCD camera to measure the square diagraph in 16 independent projections.

该系统的研制是利用"正二十面体"方法进行模拟，直流力矩电动机和光电轴角编码器配合使用，完成载物台和CCD相机的旋转运动和角度定位，使CCD相机能够实现对十六个独立方向上的投影测量。

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

该方法可根据当前输电网中各个变电站24小时的电量记录，利用电量潮流计算对输电网总线损和各条线路损耗进行计算，使计算的精度满足降损措施分析和指标考核的要求；并且对于由负荷出力曲线转化成平均功率计算潮流时引入的误差，进而导致潮流计算不收敛的情况，采用直流潮流法，依据相角对有功功率的灵敏度向量判断出"网络异常点"，并且给出了解决此种情况的方法流程图；针对结构病态的电力系统潮流计算不收敛的情况，运用非线性约束优化方法中的最优乘子法求解潮流方程的最小二乘解，从而解决了电量潮流法计算理论线损时的收敛性问题，增强了该方法的适用性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐