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球墨铸铁是一种铁、碳、硅的合金,其中碳以球状游离石墨存在。
Ductile iron is the alloy of iron, carbon and silicon, of which carbon is in the form of spherical free graphite.
youdao
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球墨铸铁是一种铁、碳、硅的合金,其中碳以球状游离石墨存在。
Ductile iron is the alloy of iron, carbon and silicon, of which carbon is in the form of spherical free graphite.
youdao