的析出，同时，采用特制安全阀使电池保持一定的内压。
Precipitation of, at the same time, USES the special relief valve to keep the battery internal pressure.
将安全阀阀座放回到镗孔内。
锅炉内压力高于额定压力需要释放能量时，安全阀不能及时弹起，锅炉就会发生意想不到的严重事故。
Boiler pressure is higher than rated pressure to release energy, the valve can not be a timely pop-up, the boiler unexpected serious incidents occur.
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