短語詞組短語boiler steam collecting header 鍋爐集汽聯(lián)箱steam air header 蒸汽熱風(fēng)器main steam distributing header 主蒸汽分配聯(lián)箱steam extraction header 抽汽母管steam seal header 蒸汽密封管steam distribution header 分汽缸main steam header 主蒸汽集管auxiliary steam header 輔助蒸汽母管;輔助蒸汽聯(lián)箱inlet steam header 進(jìn)汽聯(lián)箱 返回 steam header