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用糠醇和糠醛缩聚制备了新型呋喃树脂.A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.糠醛树脂化结焦是导致催化剂失活的主要原因.Resinification of furfural on the catalyst was the main cause of deactivation.图5醋酸苯胺比色法,糠醛...
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MEI Shi - long , 1991 . Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian, Hebei . Unpublished Ph. D thesis of Peking University.武桂春, 2003. 鲁西地区晚寒武世牙形石. 北京大学博士研究生学位论文....an unpublished PhD thesis...
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gastrozooid的音标:gastrozooid的英式发音音标为:[ɡæstrɔ:'zu:ɪd]gastrozooid的美式发音音标为:[ɡæstrɔ'zuɪd]...
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mete的一般过去时为:meted...
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首相正准备和部长们摊牌。The Prime Minister is preparing for a showdown with Ministers.今天资方准备和工会成员摊牌。Management are facing a showdown with union members today.我尽可能地避免同老板摊牌.I'd like to avoid a showdown with my boss if I possibly ...
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chromatology的音标:chromatology的英式发音音标为:[krəʊmə'tɒlədʒɪ]chromatology的美式发音音标为:[kroʊmə'tɒlədʒɪ]...
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unsightly的反义词有:sightly, sightly。adj.unsightly的反义词(不悦目的,难看的):sightly。unsightly的反义词(其他释义):sightly。...
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n.羊叫声vi.羊叫...
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inflaming的音标:...
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The results show the level of frustration among hospital doctors.这些结果显示了医院医生的不满程度。For many particle physicists, however, it was a year of frustration.对于许多粒子物理学家来说, 这是受挫折的一年.I nearly went bonkers with frustration.挫败感让我几近疯...
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“糖蜜”的拼音为:táng mì...
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n.陈述语气的动词形式( indicative的名词复数 )...
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“灵活”的拼音为:líng huó...
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adj.昏迷的, 不省人事的,昏昏沉沉的, 昏昏欲睡的...