...目的端收到后，立即将P类型包返回到源端，源端在时间（T+dT）收 到P类型包的最后一个比特，dT就是往返时延； 》时延变化（Ipdv）：基于度量值单向时延，定义为同一数据流中的两个包的单向 延迟之差。
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通过建模仿真，分析了此协议在多种业务流组合下的时延和时延变化性能，并提出了一种硬件实现方案。
The CD and CDV characteristics are analyzed under several service scenarios through system simulation. Based on the MAC protocol, an easy hardware implementation scheme is given.
大纯时延、煤种多变和蒸汽负荷频繁变化是链条炉难以进行良好燃烧控制的原因。
It is difficult to have good performance for chain boiler combustion control system due to large delay time, varying coal's quality and steam load.
以苏州电力光纤通信网西外环为对象，研究了各种通道故障下复用段保护切换、恢复过程中通道时延的变化情况。
Taking the Suzhou power fiber optic communication grid as the object of research, this paper studies the transmission delay during protection and recovery in various channel failures.
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