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刚玉粉
gen. smergal; smirgel
chem. lapis amiridis
el. emery
met. alundum powder; emery flour; emery powder; pulverized corundum
刚玉粉〔砂〕
gen. schmirgel
刚玉粉
: 2 phrases in 2 subjects
Metallurgy1
Technology1