The original design of valve plate to open the gas valve is hanging in the channel, the possession of an effective diameter about 20%.
而原设计阀板打开是悬于阀体的气体通道内，占有有效通径20%左右。
Open mouth laugh when happy, sad eyes closed a long time to cry, his possession of the weather is cool but also a strike.
开心时张嘴大笑，伤心时闭眼长哭，管他刮风下雨只不过是清凉一场罢也。
Open mouth laugh when happy, sad eyes closed a long time to cry, his possession of the weather is cool but also a strike.
开心时张嘴大笑，伤心时闭眼长哭，管他刮风下雨只不过是清凉一场罢也。
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