Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.综述了二碘化钐在分子内环化反应中的应用.Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studie...
这个想法几乎让我一下子停步。The thought almost stopped me dead in my tracks.我们停步欣赏美丽的风景.We paused in admiration of the beautiful view.“ 是英国人, ”卡尔顿再次停步, 回头作答.'Yes,'said Carton, pausing again, and answering over his shoulder....
Villa had just been relegated from the First Division.维拉队刚刚从甲级联赛中降级。Aston Villa last led the League in March 1990.阿斯顿维拉队上一次赢得联赛冠军是在1990年3月。He waited some 80 to 100 yards from the big pink villa.他在距离那座粉红色的大别墅约80到100码的地方等候...
王师傅主修这台磨床.Master Worker Wang is responsible for the overhaul of this grinder.这台新磨床通过了所有的试验.The new grinding machine passed all tests.我们只是用磨床将工件抛光和精加工.We used grinding machines only to smooth and finish a workpiece....