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煤的显微组分 xiǎnwēi zǔfèn
gen. maceral
显微组织组分
met. microconstituent
显微组织组分
gen. microconstituent
煤岩显微组分 xiǎnwēi zǔfèn
met. maceral
显微组分 xiǎnwēi zǔfèn
tech. maceral
显微 组分: 29 phrases in 6 subjects
General1
Geology1
Metallurgy2
Oil / petroleum7
Steel production2
Technology16