缓慢的流速足以防止还原剂的散失.A low rate is enough to prevent flushing of reductants.还原的烟酰胺核苷酸对固态酶可以起还原剂的作用.Reduced nicotinamide nucleotides can function as reductants to nitrogenase.许多金属冶炼操作中需要碳作为还原剂.Carbon is needed as a reducing ag...
After Mike left for work I stripped the beds and vacuumed the carpets...迈克去上班后，我扯下了床罩并用吸尘器清扫地毯。I vacuumed and dusted the living room.我用吸尘器打扫了客厅，擦了擦灰尘。I vacuumed the carpets today.今天我用吸尘器清洁了地毯。After Mike left for work I s...
to make a quip说俏皮话To quip means to say something that is intend to be amusing or clever.Quip的意思是,说一些可能令人惊讶或者看起来很聪明的话.My advice is to ride it out, make an occasional smart - aleck quip.我的意见就是出去旅行, 并时不时地说些自作聪明的俏皮话....