This article has engaged in physical and chemical experiments and analyses of outward appear-nace and microcosmic for nodular cast iron crank shaft of big powerful diesel engine.是什么意思_This article has engaged in physical and chemical experiments and analyses of outward appear-nace and microcosmic for nodular cast iron crank shaft of big powerful diesel engine.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句