常見(jiàn)例句雙語(yǔ)例句Open furnace bottom, increase steam charging steam valve to ensure normal pressure quantity of gas stove.開(kāi)啓爐底蒸汽閥，增大蒸汽入爐量以確保煤氣爐正常壓力。zhongyangjiqi.com 返回 gas charging valve