防焊油墨 fánghànyóumò solder mask Origin Definitions Defs Strokes Stroke Words Sentences Sents 防 fáng verb to guard against To take precautions against; to prevent or be on the lookout for something undesirable焊 hàn verbnoun to weld to weld or solder; to use melted metal to join or repair metal objects油墨 yóumò noun printing ink viscous oil-based coloring material used for printing