The ability of clay minerals to catalyse decarboxylation has long been recognised.粘土矿物能催化脱羧基作用是早已认识到的问题.The results demonstrate that this catalyse has an excellent activity and selectivity this reaction.结果表明该催化剂对此合成反应具有很...
The Danes had selfconfidence of conquerors, and their security precautions were casual.这些丹麦人具有征服者的自信, 而且他们的安全防卫也是漫不经心的.The conquerors marched on, burning, killing, raping and plundering as they went.征服者所到之处烧杀奸掠,无所不做.The ...
一些结构由两件式阀盖和轭架组成.Some designs incorporate a two - piece bonnet and yoke.我们需要存下200英镑以备更换水泵阀。Well we need to put by £200 for the pump valves to be renewed.把PCV阀固定在开启位置即最大流量位置.The PCV valve sticks in the open, maximum - flow...
He lapsed into long silences or became offensively off-hand...他要么陷入长时间的沉默，要么变得简慢无礼。I thought his glance at me had been offensively bold.我觉得他对我的瞥视唐突无礼。He smelled offensively unwashed.他很脏,散发出难闻的气味.The group who had been sh...
Planning minimizes costs because of the emphasis on efficient operation and consistency.规划可使成本降至最低,因为它强调有效的经营和相互协调一致.A load lock system minimizes this problem.使用装卸密封系统能把这个问题减小到最小限度.Scientific method thus minimizes the sh...
It's years since I've had a sore throat like I did last night...我的喉咙已经好几年没有像昨晚那样疼了。European bellflower with blue - purple to lilac flowers formerly used to treat sore throat.有蓝紫色至丁香紫色花的欧洲风铃草,以前用于治疗喉咙痛.I had to ...