硫作为副产品回收。
为了能在回收过程中得到二氧化碳,他建议运用一种节能的电气化学工艺,反应过程中的副产品只有氢气。
To extract the CO2 for recycling, he proposes an energy-efficient electrochemical process that produces only hydrogen as a by-product.
但是房价暴跌、房产被回收和失业率居高不下——作为经济衰退(NBER于2008年12月1日公布)的副产品——让人们损失惨重。
But collapsing property prices, foreclosed homes and soaring unemployment, all effects of the recession which the NBER announced on December 1st 2008, have taken their toll.
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