| 1. | Ac line overlay circuit
交流线路叠加电路 |
| 2. | The charger automatically compensates for low ac line voltage or extension cord use
充电器自动补偿低交流线路电压或延长线使用。 |
| 3. | Power is therefore transmitted along high - tension ac lines and then “ stepped down ” to usable voltages in local sub - stations
不过，开发风电使得直流输电技术现在又重新被人们重视起来。 |
| 4. | Verify ac line voltage , phase and frequency with the controller data plate on the enclosure door prior to connecting ac power
在连接交流电源之前，请验证交流电压、相位和频率是否与控制装置外壳门参数板上的相应数据相同。 |
| 5. | To avoid this earthing , ac lines have to be built a long way from the ground ? and the higher the voltage , the farther away they need to be
为避免这种地面衰减，交流电缆就必须架在远高于地面之上? ?电压越高，所需高度就越高。 |
| 6. | Power is therefore transmitted along high - tension ac lines and then “ stepped down ” to usable voltages in local sub - stations
因此，电能就先通过高压交流电缆传输，然后经当地的子发电站将高电压“降压”到可直接使用的电压。 |
| 7. | Ac lines become inefficient at distances around 1 , 200 kilometers , because they begin to radiate the 60 - hertz power they carry like a giant antenna
传输距离在1200公里左右时，交流线路的效率会降低，因为线路会开始辐射出自己所输送的60赫兹电力，就像支超大型天线。 |
| 8. | This kind of firing - pulse generator may leads to uncharacteristic harmonics due to unbalance of impedance or ac line voltages , or timing errors in the control system
我的论文工作是设计一个脉冲发生器。本文分析分相触发方式的缺点：在三相不对称情况下，会产生非特征谐波。 |
| 9. | The input of traditional ac - dc converter is diode - capacitance combined circuit . it ? input current wave presents pulse shape , and the power factor ( pf ) on ac line side is low
传统的ac ? dc开关变换器输入端是二极管整流-滤波电容组合电路，其输入电流波形呈脉冲状，交流网侧功率因数很低。 |
| 10. | The results show that occurrence of the single or double pole block on the dc lines , or short - circuit faults on the dc or ac lines will not influence seriously on power system stability
仿真结果表明：当南桥、华新换流站发生直流输电单双极闭锁以及交、直流侧短路故障时，不会给系统带来稳定问题。 |
