By using fault tree analysis(FTA)theories,the paper has set up FTA model to explain reasons for disfigurements of cracks in long gas and oil pipelines.是什么意思_By using fault tree analysis(FTA)theories,the paper has set up FTA model to explain reasons for disfigurements of cracks in long gas and oil pipelines.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句