直流的

By analyzing the braking scheme of linear metro and power loss in braking process, a combined braking control strategy based on feedback braking and energy-consuming braking is put forward.

在此基础上，提出了一种将再生制动与直流能耗制动相结合的复合制动控制策略，并对复合制动过程中的能量损耗进行了分析。

Applications on noise absorption of DC motor, power supply input, surge absorption of inductive load, bypass condenser, communication line protection and prevention from electricity surge were put forward because of higher performance requirement on weapon system.

针对武器系统的高性能要求，本文提出了SrTiO3基压敏电阻在直流电机消噪、电源输入端、吸收电感性负载开关浪涌、旁路电容器、通信线路防护、防止电涌冲击等方面的应用。

These main jobs completed are included:The cascade feedforward-feedback control system of the once-through stream generator is advised.

本文完成的主要工作有：设计直流蒸汽发生器的串级前馈—反馈控制系统。

In addition, the effects of current, cathode cone angle and arc length on the current density and arc pressure distribution at anode surface in GTA welding are analyzed by the use of the built arc model, and the computed results agree well with the experimental results.

另外，运用建立的电弧数学模型，分析了焊接规范参数变化对直流GTAW电弧阳极表面电流密度和电弧压力径向分布规律的影响，计算结果与实验结论基本一致。

By means of discharge test on air clearance of real size simulation tower head , the discharge characteristics of UHVDC tower air clearances under DC pre-voltage superimposed with switching surge are researched and the test data are obtained.

通过真型尺寸模拟塔头空气间隙放电试验，研究了特高压线路杆塔空气间隙在直流预电压叠加操作冲击下的放电特性，得到了叠加电压的试验数据。

While the switching overvoltage is 1.8 pu,the minimum air clearance of upper space and lower space on ±660 kV DC double-circuit transmission line tower is 4.8 m and 4.9 m respectively at the attitude below 1 000 m, when at the attitude of 2 000 m, the minimum air clearance of upper and lower spaces is 5.4 m and 5.5 m respectively.

最后，结合宁东-山东直流输电工程的实际情况，在1.8pu操作过电压下，对于海拔1000m及以下地区，±660kV同塔双回塔头的上层空气间隙距离建议为4.8m，下层空气间隙距离建议为4.9m；当海拔为2000m时，这2个距离分别建议为5.4m和5.5m。

The paper designs and develops the direct current drive circuit of SOA to realize the cross phase modulation for dual-loop optical buffer in the lab.

本文设计并研制出了SOA的直流驱动电路，用于实现本实验室中双环全光缓存器中信号光与控制光的交叉相位调制。

Within those, the first side of DC power supply, switching unit and electrical isolation transformer couple to the first earth wire, and the secondary side of electrical isolation transformer and the controller couple to the second grounding wire.

其中，直流电源、切换单元及电气隔离变压器的一次侧耦合至第一接地线，且电气隔离变压器的二次侧及该控制器耦合至第二接地线。

This shows what happens to the crevasses , and when lakes form, they create what are called moulins. The water goes down to the bottom and it lubricate s where the ice meets the bedrock.

这里展示了裂隙造成的后果，一旦形成了湖，就会产生冰川蜗穴，水一直流到底部，在底部的冰和基岩之间直到润滑作用。

In the motor drive controller, current sampling cir- cuit protecting circuit, pressure adjusting circuit and signal insulating circuit are made up of DSP and its peripheral circuit. CPLD is employed to deal with the brushless DC motor＂ s rotor position signal in order to realize.

电机驱动控制器采用微控制芯片和外围电路构成了电流采样、过流保护、压力调节等电路，利用CPLD实现无刷直流电机的转子位置信号的逻辑换相。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。