The first grassroots Deep Catalytic Cracking unit with a capacity of 400 thousand t/a was start-up in Anqing refinery in March,1995.是什么意思_The first grassroots Deep Catalytic Cracking unit with a capacity of 400 thousand t/a was start-up in Anqing refinery in March,1995.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句