由于阀座下部设有弹性密封件，在压力锅上气后，弹性密封件密封阀杆和阀座。
The elastic sealing element can seal the valve rod and the valve seat when pressure in the cooker is started to be increased.
由于阀座下部设有弹性密封件，在压力锅上气后，弹性密封件密封阀杆和阀座。
The elastic sealing element can seal the valve rod and the valve seat when pressure in the cooker is started to be increased.
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