短语词组短語annular ceramic burner 套筒式陶瓷燃燒器annular entry burner 四周進氣燃燒器;周環進氣噴燃器annular r burner 環狀燃燒器;環形燃燒器annular combustion burner 環狀燒嘴annular r entry burner 四周進氣燃燒器 返回 annular burner