oxide 测验

[ˈɒksaɪd]

中氧化维氧化物

Polyethylene oxide (PEO) was coextruded with poly (ethylene- co -acrylic acid) (EAA), a copolymer with much lower crystallinity than PEO (fig. S1).

Umber is a pigment made from clay containing iron and manganese oxide.

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