In knowledge economical time, the knowledge capital becomes the most important strategic resources. 摘要知识经济时代，知识资本成为最为重要的战略资源。
Researching the hydrocarbon source rocks of Lower Palaeozoic in North China is very important to the pre-Tertiary oil-gas strategic precinct. 摘要华北地区下古生界烃源岩研究对前第三系油气战略资源选区具有重要意义。
