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选煤
xuǎnméi
chem.
wash coal
met.
coal dressing
;
coal preparation
;
coal separation
选煤:
49 phrases
in 10 subjects
Business
1
Chemistry
1
China
2
Earth sciences
2
General
1
Geology
2
Metallurgy
6
Oil / petroleum
1
Technology
32
Water resources
1
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