This is a fractionating tower.这是一座分馏塔.As the solution to be purified is heated, its vapors rise to the fractionating column.当要被提纯的液体受热时, 它的蒸汽上升到分馏柱.The utility model relates to a continuous thin film evaporation device p...
综述了桥连或取代环戊二烯基 ( 茚基 ) 铁—铁键羰基化合物的研究进展.The progresses in bridged or substituted cyclopentadienyl ( and indenyl ) RuRu Bond carbonyl complexes are summarized....
学生常常赶数百英里的路来到这里。Students often travel hundreds of miles to get here.学院的老师们抱怨说他们的学生还很不适应大学的课业。Faculty members complain that their students are unprepared to do college-level work.许多学生并未做好接受高等教育的充分准备。Many students are not ...