结果表明：与柴油相比，发动机燃用二甲醚时的喷油延迟期延长，滞燃期缩短，最高爆发压力和最大压力升高率均低于柴油机。
The results show that DME operation has longer injection delay, lower maximum cylinder pressure, lower ratio of pressure rise, shorter ignition delay in comparison with diesel operation.
所谓时滞是指信号传输的延迟。
本文针对一般延迟的复杂动力网络，研究了脉冲采样时存在时滞的脉冲同步问题。
In this paper, we investigate the delayed impulsive synchronization of general complex delayed dynamical networks.
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