Causes of central segregation and protective measures are described. 論述了中心偏析產(chǎn)生的原因及防止措施。
A great effort is made to keep porosity, segregation, impurities, and nonmetallic inclusions to as low a level as possible. 為了保證氣孔，偏析，雜事及非金屬的含量在盡量低的水平，做了大量的努力。
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