说明：  TDC编程应用手册TDC系统属于多处理器系统，多个CPU处理器可以同步运行。TDC机架内的所有模块都通过高性能的64位背板总线相连，通讯的周期时间可达100μs。
(TDC programming application manual TDC system belongs to multi-processor system, and multiple CPU processors can run synchronously.All modules in the TDC rack are connected via a high-performance 64-bit backplane bus, and the communication cycle time can reach 100 s.)