This technical process is simple, carburization is stable, application is widely.利用石墨煤增碳的炼钢技术,工艺简单可行, 增碳稳定, 应用广泛.Carburization of molten iron in the dropping zone of BF has been studied.高炉铁水渗碳的主要阶段在滴落带,炉缸内的渗碳过程不会掩盖滴落带的渗碳...
Bilingual Time: Have you ever busked in your own hometown?《双语时代》: 你曾在自己的家乡表演过街头艺术 吗 ?There would usually be a pedestrian street where people busked and they would become quite established.通常会有一条步行街,人们聚集在那里表演街头艺术,并会变得小有名气...
沼生植物:多年生的沼泽植物,具有水下越冬芽.Helophyte A perennial marsh plant that has its overwintering buds under water.沼生植物:多年生的沼泽植物,具有水下越冬芽. 例如芦苇 ( 香蒲 ).Helophyte A perennial marsh plant that has its overwintering buds under water. An exa...
His grandfather is a geographer.他的祖父是一位地理学家.Groups of geographer to study the special rock formations.很多地质学家来到这里,研究特殊的岩层.Li Siguang is a famous geographer.李四光是一位著名的地理学家....