实施三峡库区经济可持续发展的战略构想

三峡库区是我国经济文化相对落后的地区 ,应以经济的可持续发展为前提 ,注重经济、社会、资会、资源、生态环境的协调发展 ,以谋求三峡库区社会经济的全面进步为目标     

‘Repertoires of Contention’ in Movements Against Hydropower Projects in India

Applying Charles Tilly's notion of ‘repertoires of contention’, this paper discusses strategies and modes of protest carried out by the movements against hydropower projects in India. It compares the Narmada Bachao Andolan (NBA; Save Narmada Movement) in Madhya Pradesh and the Shramik Mukthi Dal (SMD; Labour Liberation Party) led mobilisations against hydropower projects in Maharashtra. It explains the more dramatic repertoires deployed by NBA as opposed to moderate and pragmatic movement repertoires of SMD. The paper concludes that the differences in ideology, organisation and cultural–historical legacy of the two organisations, as well as their different modes of interaction with the state, are the causes behind different contentious repertoires deployed by them, which resulted in different trajectories and outcomes.     

液压系统故障对挖掘机性能的影响

随着科技的发展,液压传动在工程机械中应用越来越广泛。液压系统作为液压挖掘机的一个重要组成部分,其系统性能及工作质量直接影响到挖掘机的工作效率和可靠性。本文从主泵调节器、液压缸、驱动泵上的单向阀、管路、液压油等几个方面对挖掘机液压系统故障进行分析,总结其对整台挖掘机的影响,并给出排出故障的方法。