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煤岩学
méiyánxué
gen.
coalpetrography
chem.
coal petrography
ecol.
anthracology
tech.
petrology of coal
煤岩
石
学
tech.
anthracology
;
coal petrology
煤岩学
:
8 phrases
in 6 subjects
Earth sciences
2
Ecology
1
Explosives and Explosive Ordnance Disposal
1
General
1
Geology
1
Technology
2
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