The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.Many processes that are essential to the chemical industry use heterogeneous catalysts.很多重要的化学工业过程就是使用多相催化剂的.Catalysts that lowe...
The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.Many processes that are essential to the chemical industry use heterogeneous catalysts.很多重要的化学工业过程就是使用多相催化剂的.The producing techn...
The network was broadcasting the World Series from Candlestick Park when the quake struck.地震发生时，该电视网正在烛台棒球场直播世界系列赛。The people in the stands at Candlestick Park are standing and cheering with all their might.烛台体育场看台上的人们都站...
Was it an accident or did David do it on purpose?是意外还是戴维故意所为？I don't think he stepped on your toes on purpose.我想他不是有意伤害你的感情.She sometimes does things on purpose just to annoy me.她有时存心做些事来使我生气....
结果表明, 嗉囊、腺胃和肌胃内食糜pH随 日龄逐渐增加,而小肠内食糜pH随 日龄变化不大.Chyme pH in crop, proventriculus and gizzard increase gradually with age.胃的蠕动将食物与处于胃壁上的胃腺分泌的消化及盐酸混合,由此形成的食糜被推送入小肠.Peristalsis mixes food with enzymes and hydrochloric acid fro...
He figured up the balance in their checking account.他算出了他们活期存款账户上的余额总和。I have figured out how much during the week I spent.我算出了这个星期花了多少钱.We figured in the travel expenses but forgot the cost of meals.我们把旅费算了进去,但忘了算伙食费....