The word “debt” contains a mute letter.在debt这个词中有一个不发音的字母。The boy is mute and deaf.这男孩既聋又哑。In the traditional citadels of Christendom, grey Gothic cathedrals stand mute witnesses to a rejected faith.在传统基督教的大本营, 灰白色的哥特式大教...
采用不同材质分层喷涂, 降低了炉衬造价.Storied spurting with various kinds, reducing cost of lining of stove.高炉炉衬结构包括本体内衬耐火材料、砌筑方式、炉衬冷却方式.Rational form of furnace lining structure is prerequisite to BF long life.通过采取这些措施从而使炉衬的寿命由同行业的平均6个月延...