free cementite 中文意思是什麼
free cementite
解釋
單體雪明碳鐵-
The results indicated that low graphite spheroidization rate and free cementite were the main causes of poor mechanical property
試驗結果表明，控制碳當量和球化劑加入量，採用瞬時孕育等可提高球化率；採用預熱砂型等可減少滲碳體。
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