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蛋白石 dànbáishí
hydroel.st. opal
met. opal (SiO2•nH2O)
oil gelite
蛋白〔猫眼〕石
gen. opal
蛋白 石: 92 phrases in 13 subjects
Animal husbandry1
Architecture1
Chemistry2
Desert science1
Earth sciences1
Explosives and Explosive Ordnance Disposal1
General26
Geology1
Oil / petroleum22
Polymers1
Skydiving1
Technology29
Textile industry5