The test results showed that hydrotreating activity of ex-situ presulfided catalysts was superior to that of in-situ sulfided catalysts.是什么意思_The test results showed that hydrotreating activity of ex-situ presulfided catalysts was superior to that of in-situ sulfided catalysts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句