防焊油墨 fáng hàn yóu mò

DEFINITIONS

  1. solder mask (applied to a circuit board)

CHARACTERS

防 fáng
HSK 5
defend; prevent; embankment
焊 hàn weld, solder
油 yóu
HSK 4
oil, fat, grease, lard; paints
墨 mò
HSK 6
ink; writing