The Study on the Overcooling Austenite Isothermal Transformation Diagram and Tempering Technology of Circular Chain Steel in Coal Mine Machine是什么意思_The Study on the Overcooling Austenite Isothermal Transformation Diagram and Tempering Technology of Circular Chain Steel in Coal Mine Machine在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句