Alarm, feed valve or pump starter switch actuates just before the burner switch cuts the firing.

警报器，进水阀或泵启动装置开关在燃烧器关闭燃烧之前启动。

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And finally the influence of negative pressure of furnace hearth, the air feed pressure on internal gas flow feature of burner are analyzed b...

最后举例计算分析了炉膛负压、送风压力对燃烧器内部气动特性的影响。

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