In-situ thermal degrdn. of a.com. dehydrogenation catalyst in a fixed-bed reactor is studied exptl.是什么意思_In-situ thermal degrdn. of a.com. dehydrogenation catalyst in a fixed-bed reactor is studied exptl.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句