The exploitation and utilization of biomass energy is an effective method for relieving the pressure of conventional energy resources shortage . the technology of biomass pyrolysis can convert low - quality biomass into bio - oil that has the character of high - quality , high energy density , cleanness and zero carbon dioxide emission 大力开发生物质的热裂解制油技术，可将低品位的生物质能转化成高品质的、高能量密度，清洁、无污染而且二氧化碳排放为零的生物油液体燃料。
The application of pointed prop mechanical slice stoping and backfilling mining in sanshandao gold mine is presented . it is characterised by high mechanization degree , great capacity of slice stoping and low mining loss rate and ore dillution rate . as a result , it is suitable for the large - scale mining of low grade deposit 介绍了点柱式机械化分层充填采矿方法在三山岛金矿的应用，该采矿方法机械化程度高，采场分层生产能力大，两率指标较低，适用于低品位矿床的大规模开采。
This paper systematically analyses the size and characteristics of the low - grade petroleum reserves in china and further discusses the three development organization modes of petroleum , enterprises , i . e . , the development mode of oil companies , the development mode of joint stock system ( dongsheng mode ) , and the coexistence of multiple petroleum development modes ( northern shaanxi mode ) 现有3种石油企业开发组织模式，即油公司开发模式，股份制合作的东胜模式，多种石油开发共存的陕北模式的系统分析，证明以“股份制”为主体的低品位石油储量开发的“东胜模式”是成功的，并取得了较好的成效。
In line with the phosphate crisis brought about by phosphate resources in short supply in china and the status of available technology , an analysis is made of the strategic significance and technological and economic superiority in the high - efficiency utilization of phosphate resources , in particular medium - and low - grade phosphate rocks 摘要针对我国磷资源紧缺导致的磷危机和现有技术状况，分析了高效利用磷资源，尤其是中、低品位磷矿的重大战略意义和技术及经济优势。
