Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/9b83d91c2cc937f1604add8418679447.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 metathetically例句_metathetically英汉例句_metathetically双解例句_贰靶汉英词典
In particular, the production of propylene and other important olefins via olefins metathesis reaction from n-butenes feedstock has received considerable attention. 特别是在利用正丁烯生产丙烯和其它重要单烯烃方面，复分解反应受到越来越多的重视。