Tars from two Mongolian coals (Tavan Tolgoi and Baganuur) produced by simple distillation have been characterized using size exclusion chromatography (SEC) with
R1是一种车型,但它的意义不限于车型,它代表了我们所追求的运动、自由、向上的精神。作为永久非盈利性组织,‘北京R1车友会’将不断努力,以娱乐互助、提升自我、贡献社会为宗
在大大小小、造型各异的公路跑车充斥中国街头的今天,作为一款街头跑车,GP150算不上是最出色的,在它之上还有各种排量的街头跑车。但是作为150mL级的街头跑车,GP150的出色表现确实不得不令人称道。外形一见倾心GP150沿用的是隆鑫参加GP赛的战车外形,并在此基础上加以中国化的优化,使得它在保留"赛车
车型档案NK街车的典范这是一台来自力帆集团的NK街车，工厂代号为LF250-19。该车搭载了二台风冷V型双缸发动机，在8000转的时候可以爆发出13.5kW的最大输出功率，
In the present study, response surface methodology applying Doehlert experimental design was used to investigate decolourisation parameters of crude black shea
Fluidized bed combustion behavior of coal and biomass is of practical interest due to its significant involvement in heating systems and power plant operations.
The adsorption potential of clay and sandy soil to remove benzene from liquid-phase system was examined. A series of batch adsorption tests were carried out for
技术引进是促进技术进步、发展国家经济、赶超世界先进国家的捷径,这已经被世界各国技术引进实践充分证明。十一届三中全会之后,我国实行了对外开放政策,广泛地吸收外资、引
In recent years the development of chitosan (CH) based materials as useful adsorbent polymeric matrices is an expanding field in the area of adsorption science.
在激烈的市场竞争环境中,企业投资往往带有风险,就是说投资的未来后果具有不确定性:可能有好的结果,也可能有坏的结果。这种后果带有不确定性的投资称为风险投资。对风险投资