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化验员 huàyànyuán
agric. analyst (analystus)
chem. analytical chemist
hydroel.st. tester
life.sc. laboratorian
met. analyst; assayer
oil analyzer
sport., med. laboratory technician
tech. laboratory assistant
UN, tech. laboratory technicians
化〔实〕验员
gen. assayer
化验员: 6 phrases in 4 subjects
Agriculture1
Economy2
Oil / petroleum2
Oil processing plants1