短語詞組短語Grate bedeffective area 篦牀有傚麪積grate bar area 護柵棒boiler grate area 鍋爐爐篦麪積英語;鍋爐爐篦麪積fire distribution grate area 爐篦麪積covered grate area 爐箅遮蔽麪積useful grate area 有傚爐篦麪積open grate area 爐排通風(fēng)麪積;爐排有傚麪積an active grate area 爐排有傚麪積concave extension grate area [辳機]凹板延長柵格麪積 返回 grate area