A new presulfidation process of hydrotreating catalyst in the hydrogenation is introduced.介绍了一种加氢催化剂器内预硫化新工艺.Determination method of Pd content in hydrotreating catalyst by ICP - AES was established.建立了采用电感耦合等离子体发射光谱(ICP...
OBJECTIVE : To evaluate the influence of different technics on the contents of catalpa in rehmannia root.目的: 探讨不同炮制方法对地黄中梓醇含量的影响.The reaction of catalpa oil, tung oil and hydroxyl - terminated polybutadiene gives alkyd r...
He looks like a bum who's been drowning his sorrows in sleazy dives.他看起来象个游手好闲之辈,整天泡在肮脏的下等酒吧借酒消愁.Drowning man will catch at a straw.溺水的人一根草也要抓。He saved men from drowning and you shake at a cur's yelping.他搭救了快要溺...
有效地利用心理场中的各种力的作用,可激发内源的正性作用力,提高高校辅导员工作的积极性和创造性.So effective use of psychological field can stimulate endogenous and arouse university assistants'enthusiasm and creativity....