所设计的多变量内模控制器能使系统稳定解耦，所得到的闭环系统根据开环系统时滞来描述。
All the stabilizing IMC controllers and the resulted closed-loop systems were characterized in terms of the open-loop system's time delays.
研究表明：利率调整对于产量、物价等宏观经济变量的影响并不直接和明显，存在不同的时滞效应。
Our study indicates that the impact of interest rate adjustment upon output, prices and other macro-economic variables is not direct or obvious, but that they have different lag effects.
研究具时滞的三阶非线性微分方程，利用变量替换和不动点方法，得到了此方程有界解和概周期解的存在性及唯一性结果。
This paper deals with the problems on the existence and uniqueness of bounded solutions and almost periodic solution for third order nonlinear differential equations with time lag.
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