switching unit

In all-optical network, date signals in transmission and switching unit are all optical signals. Switch is no longer on the handling of user information carried by bit, but realized through wavelength routing device.

全光网络以光节点代替电节点，节点之间也是全光化，信号以光的形式进行传输与交换，交换机对用户信息的处理不再按比特进行，而是通过波长选择器件实现路由选择。

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To design and realize a large scale video frequency switching network, which is rearrangeable and nonblocking, taking the video crosspoint switch as the basic switching unit, a three stage nonblocking Clos network was constructed, and the signal route was selected by a route table.

设计和实现一个可重排无阻塞的大规模视频矩阵切换网络.基于多级互连网络，以视频交叉点开关作为基本的交换模块，组成一个三级非对称Clos网络。

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Large retailers also offer a lower price to the side with higher demand elasticity, lower unit cost and switching cost. Otherwise, large retailers would set a higher price to the side.

大型零售商也对需求弹性高、单位成本和转移成本低的一边制定较低的价格，反之，大型零售商则对该用户制定较高的价格。

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With the evolution of network technology and the convergence between different networks, the way of transmitting and switching with data packets as its basic unit will play the dominate role in the Next Generation Network ( NGN).

随着网络技术的演进和不同网络间的融合，在下一代网络中，以数据分组为基本单元进行传输和交换的方式将占据统治地位。

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The comprehensive switching control is carried out by the control strategy of combining transformer load with transformer temperature and the change rate of temperature. The cyclic operation of cooling unit group is controlled by the principle of accumulated operating time balance.

装置以变压器的负荷、油面温度与温度变化率相结合的控制策略进行冷却器的综合投切控制，以冷却器组的累计运行时间基本均衡为原则进行冷却器组循环控制。

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Problem existing in reactive-load compensation equipment and auto-switching unit

湖南电网无功设备及自动投切装置存在问题探讨

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Computer control unit produces the trigger pulses for the fast switching thyristors.

运行频率的设定以及快速晶闸管触发脉冲的产生由计算机控制单元完成。

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The function modules of the new ERT system based on Digital Signal Processor ( DSP) have been achieved, including the control strategy, exciting unit, electrodes switching unit, signal processing unit and external/ internal interrupt in DSP.

实现了基于数字信号处理器（DSP）ERT新系统中的各单元功能，包括整体控制策略以及激励单元、电极切换控制单元、信号调理单元、以及DSP内/外部中断的软件实现。

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Furthermore, switching devices in the auxiliary resonant unit worked on and off under zero current switching.

此外, 辅助谐振单元中的开关器件可以在零电流的条件下完成开关操作.

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Since the system have been operated, the unit can have a good adaptation in the sliding pressure operation mode, while still achieving the six coordinated control system implementation ( Manual 、 Basic Boiler 、 Turbine Follow 、 DEB 、 Turbine Base 、 ADS) bumpless switching between.

系统投入运行后，机组能够较好地适应滑压运行方式，同时还能实现协调控制系统的六种实现方式（手动、锅炉基本、汽机跟随、DEB、汽机基本、ADS）之间的无扰切换。

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