商业上采用的以镍作催化剂的氢化有两种.Commercially two main types of hydrogenations are carried out with Nickel catalyst.抑制剂和促进剂能影响氢化速率.Inhibitors and promoters may affect the rate of oxxidution.用六氢化邻苯二酸酐加入到邻苯二酸酐中,可使其放热反应减慢.Exothermic reac...
Objective To study the in vivo antitumor activity of the enediyne chromophore ( LDC ) of lidamycin.目的研究力达霉素发色团对 肝癌 的实验治疗.Their excellent survival during autolysis in vitro and ischemia in vivo is consistent with this.与此一...
The next six innings were scoreless.接下来的六局中双方均颗粒无收。He's had a good innings but now it's time for him to retire and let someone younger take over as director.他成功地当了多年主任,不过现在该退休了,让更年轻的人来接替.The home team was very ...
The decay of the meat could have been prevented by proper refrigeration.如果经过适当的冷藏,这些肉本来不至于腐烂掉.Keep all meat products under refrigeration.把所有的肉制品都冷藏起来。This result is of great importance in steam engineering and in refrige...
His fury was so great he could hardly speak. He growled some unintelligible words at Pete...他气得几乎说不出话来，冲着皮特不知咆哮些什么。"Why does she want to get in there?" Pete wondered.“她为什么想进那里面？”皮特心想。Pete was telling them an anecdote abo...
Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山.to plod through mud在烂泥里吃力地走He was destined to plod the path of toil....
As far as mathematicians are concerned, there's a certain virtue in wearing intellectual blinkers.就数学家们来说，用学者的眼光来看问题不无裨益。As I opened my blinkers, guess who I saw?当我睁开眼睛时, 你猜我看见了谁?That horse dislikes wearing blinkers...