求翻译：5, after a second catalytic pyrolysis, and then filter processing, improve the quality of one grade of oil can be sold directly as a commodity.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

5, after a second catalytic pyrolysis, and then filter processing, improve the quality of one grade of oil can be sold directly as a commodity.

问题补充：

匿名	2013-05-23 12:26:38 5、第二的催化裂解和当时的过滤器处理，提高一个等级的油质量后，都可以直接作为一种商品卖出。

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