It is discovered by test that micro RE can promote formation of austenite in cast iron with D form graphite, which can strengthen the cast iron matrix.是什么意思_It is discovered by test that micro RE can promote formation of austenite in cast iron with D form graphite, which can strengthen the cast iron matrix.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句