在重新点火前先把煤渣耙出来。

Rake out the cinders before you start a new fire.

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它们也可作为自燃点火成分，改进点火和重新点火性能。

They also may be used as hypergols for improving ignitability and reignitability characteristics.

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当气阀关闭一段时间后，如果单片机仍在工作，系统可以实现重新点火。

When the valve closed for some time, and if the MCU are still working, the system can achieve re-ignition .

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