The parallel blade damper is the ZD series damper. These dampers have been designed to provide long life, silent operation and require zero maintenance.
平行叶片风门是ZD系列风门。这些风门的设计使用寿命很长，运行安静，不需要进行维护。
The utilized method was to transform the parallel operation of circulating water via condenser to series operation.
所采用的方法是将凝汽器循环水并联运行改为串联方式。
The paper introduces the large system decomposition coordination theory, establishes the reservoir flood control optimization operation model of series and parallel connection reservoirs group.
文章介绍了大系统分解协调理论，建立了串联、并联库群水库防洪优化调度模型。
The simulations including a single APF under a variety of different conditions, the APF's parallel operation with 12/24-pulses rectifier and multiple APF in series have been done in the paper, too.
其次，本文还详细介绍了有源滤波器的谐波提取原理和电流控制原理，并对单台有源滤波器的各种不同工况、有源滤波器与12／24脉波整流器的配合运行工况和有源滤波器的多重化工况进行了仿真验证。
The simulations including a single APF under a variety of different conditions, the APF's parallel operation with 12/24-pulses rectifier and multiple APF in series have been done in the paper, too.
其次，本文还详细介绍了有源滤波器的谐波提取原理和电流控制原理，并对单台有源滤波器的各种不同工况、有源滤波器与12／24脉波整流器的配合运行工况和有源滤波器的多重化工况进行了仿真验证。
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