大批量生产(The mass-production of sheet metal can be traced to the middle of the nineteenth century when sheets of tinplate were stamped to form food containers. 金属薄板的大批量生产可以追溯到19世纪中叶,那时已将镀锡薄板冲压成食品盒。)
质量传递(The large surface area of the steel droplets, in contact with the slag, at high temperature and vigorous stirring, allows quick reactions and rapid mass transfer of elements from metal and gas phases to the slag. 钢水微滴具有大的表面积,当它在高温和剧烈搅拌的情况下与炉渣接触时,反应速度加快,从钢水和气相向炉渣的元素传质速度亦加快。)
传质速度(【技】溶液中的物质在扩散过程中,单位时间内通过单位截面积物质的量。传质速率与扩散速度之间的关系是:单位截面积上的扩散速率即是传质速度。: Below a critical carbon content the rate of mass transfer is insufficient to react with all the injected oxygen. 低于临界含碳量时,传质速度不足以维持与喷人的全部氧进行反应。)