A transient process and steady state simulation model of underwater diesel engine system, including governor, diesel engine and rear exhaust pipe system, was developed and verified in this paper.

建立了包括调速器、柴油机本体、后排气管路的水下柴油机动力系统的动态及稳态过程分析模型，并进行了试验验证。

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Two numerical models was presented to simulate the transient and steady state behavior of a vapor compression refrigeration system.

提出了变频蒸气压缩式制冷系统在稳态和非稳态下的两种数值模拟模型。

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After a short transient time, the system reaches a critical steady state in which avalanches of activity are distributed according to power-law.

系统经一个暂态过程后达到一个临界态，其雪崩大小的概率统计分布服从幂次规律。

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