The article introduces choices of direct purge on gas transmission system displacement method, determination of purge criteria, its technological process and control, then its reliability.

介绍城市煤气输配系统置换方式的选择、置换参数的确定、置换工艺流程及指标的控制，说明直接置换方式的可靠性。

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Simulation results show that the proposed algorithm has advantages over the topology control algorithm based on the direct-transmission region in terms of average node degree and power efficiency.

仿真研究表明，提出的算法在平均节点度和传输功率的效率方面均优于基于直接传输区域的拓扑控制算法。

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The invention relates to a control method of a double-motor hybrid power system having a gasoline direct injection engine and belongs to automotive power transmission system technology.

本发明涉及装备汽油直喷发动机的双电机混合动力系统的控制方法，属于汽车动力传动系统技术。

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In contrast, Mr Charleston's study which the government paid for, so as to learn how better to control the disease measured direct incidences of transmission between animals.

ECONOMIST: Foot-and-mouth disease