由于采用了双阀孔结构设计，在最大压差下排放凝结水的同时，还有一个为二次蒸汽系统设计的预设压差系统在工作。

Because of the dual-orifice design, there is a preset controlled pressure differential for the secondary steam system, while maximum pressure differential is available to discharge the condensate.

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如果利物浦能在明天晚上的比赛中战胜曼联的话，这也仅仅是利物浦第二次连续两个赛季双杀曼联。之前唯一的一次发生在2000 - 02赛季。

If Liverpool win it will be only the second time they've completed two successive league doubles over United. The only previous occasion was seasons 2000-02.

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上赛季对利物浦的双杀是伦敦人在英超以来的第二次。

Last season's double was the second the Londoners have recorded over Liverpool in the Premier League.

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