渗碳 shèntàn carburization Origin Definitions Defs Strokes Stroke Words Sentences Sents 渗 滲 shèn verb to seep to seep; to ooze; to permeate; to leak through or out of something slowly碳 tàn noun carbon nonmetallic element (C); the essential component of organic matter, existing in nature as diamond, graphite, and coal