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四氧化三铁
chem.
magnetic oxide
;
magnetic iron oxide
el.
ferriferrous oxide
;
ferric oxide
met.
black iron oxide
;
black of iron
;
ferroferric oxide
(FeO•Fe
2
O
3
)
;
ferrosoferric oxide
(Fe
3
O
4
)
oil
ferroferric oxide
space
ferriferous oxide
tech.
iron oxide black
;
magnetic iron ore
;
magnetite black
四氧化三铁
:
1 phrase
in 1 subject
Technology
1
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