The natural form of carbon in cast iron is the free graphite flake form.
The natural form of carbon in cast iron is the free graphite flake form.
铸铁内的碳天然形式是游离石墨薄片形式。
The natural form of carbon in cast iron is the free graphite flake form.
铸铁内的碳天然形式是游离石墨薄片形式。