dry-chemical fire extinguisher 基本例句 干粉灭火器 Each floor should have adry-chemical fire extinguisher.每层楼都要放置干粉灭火器。 When the jet is small enough to be approached, put out the flame with a carbon dioxide or dry powder extinguisher.当喷射的火焰小到可以接近时，用二氧化碳或干粉灭火器扑灭火焰。