non-constant time delay 非常数时滞
time-delay constant 时间延迟常数
Constant delay and time-varying delay 固定时滞及时变时滞
Based on fixed data packet dropout rates and constant time-delay, the NCS is modeled as an asynchronous dynamical-switched system constrained by configuration event rates.
基于一定的数据包丢失率和恒定时延，系统被建模为由结构事件率约束的异步动态切换系统。
Most research work in constructing gene networks either assumes that there is no time delay in gene expression or that there is a constant time delay.
目前，已提出的方法大多数都不考虑基因表达之间的时延，或者假定其时延是一个常量。
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