AR Air Regulators in multiple burner systems, hold constant air-fuel ratio and the mixture pressure with reducing burner port area of up to 90 %.是什么意思_AR Air Regulators in multiple burner systems, hold constant air-fuel ratio and the mixture pressure with reducing burner port area of up to 90 %.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句