Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol. 对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂.
The surgeons have been working for twenty hous without letup.那些外科医师一连工作了二十小时没有停止。He jaws with no letup.他没完没了地讲.We must develop the advanced productive forces without letup.我们必须坚持不懈地发展先进的生产力.They pressed on without letup ...
它的成员缺乏视整个运动为一体的意识.Thus, members had very little sense of identity with the movement.是一座集住宿 、 餐饮 、 娱乐 、 商务 、 购物于一体的多功能酒店.Is a set accommodation, catering, entertainment, business, shopping in one multi - functional hotel....
Modification for synthetic purposes on the Diels - Alder adducts 56 and 62 has only rarely been considered.为了达到合成的目的,对Diels-Alder加 成物(56)和(62)加以改造的问题很少有人考虑.The meanders of a prattling brook, were shaded with straggling w...
Let the student fall into the disposition, the individuality bloodline - ism rules imperceptibly.让学生无形中陷入了性格 、 个性血统论的条条框框.Is the ISM Code applicable to the ship?是否是ISM规则适用的船舶?I don't like words that have - ism as an...
Those piercing eyes quizzing him made Fred shrink.杨辉见到大胡子王老师两眼炯炯地望著他,有点害怕....a piercing whistle.尖厉的哨音A piercing scream split the air.刺耳的尖叫声划破长空。Then he heard a piercing scream echoing down the deep well, ending in a dull...