沾染控制 zhān rǎn kòng zhì

DEFINITIONS

  1. contamination control

CHARACTERS

沾 zhān
HSK 6
moisten, wet, soak; touch
染 rǎn
HSK 4
dye; be contagious; infect
控 kòng
HSK 5
accuse, charge; control
制 zhì
HSK 5
system; establish; overpower