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船舶柴油机升级双燃料机关键系统技术研究 被引量:2
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作者 苏展望 冯丰 +4 位作者 张旭东 赵亚君 蒋爱香 董威 刘选科 《内燃机与配件》 2019年第5期3-7,共5页
基于中国船级社关于船舶气体燃料发动机的规范及指南要求,对内河船舶柴油机升级改型为双燃料发动机关键系统及技术方案进行了系统分析研究,主要对升级改型双燃料发动机的总体原则、燃烧及配气正时系统、储气罐及汽化器系统、气体燃料供... 基于中国船级社关于船舶气体燃料发动机的规范及指南要求,对内河船舶柴油机升级改型为双燃料发动机关键系统及技术方案进行了系统分析研究,主要对升级改型双燃料发动机的总体原则、燃烧及配气正时系统、储气罐及汽化器系统、气体燃料供应系统、气体燃料调节混合系统、发动机本体改型系统、控制检测系统、安全保护及机舱检测通风系统等关键系统进行介绍。通过以某渔政船舶的改造技术研究,提出了一种安全性高、可靠性强、自动化程度优、实施性强的柴油机升级改型双燃料发动机的技术方案,可以作为今后节能环保动力船舶建造或升级改型的设计和使用提供重要参考。 展开更多
关键词 船舶柴油机 双燃料发动机 节能环保 升级改型 减排
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Prospects of China's Agricultural Development 被引量:9
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作者 魏后凯 韩磊 《China Economist》 2016年第4期46-67,共22页
Remarkable achievements have been made in China's agricultural development since the late 1970s. Nevertheless, deep-rooted problems are arising from inefficient farming practices. From mid- and long-term perspectives... Remarkable achievements have been made in China's agricultural development since the late 1970s. Nevertheless, deep-rooted problems are arising from inefficient farming practices. From mid- and long-term perspectives, migration of China's agricultural labor will slow and large-scale operation of farmland will accelerate. Although grain supply and demand have maintained a tight balance, new potentials still exist in improving grain production. Under the pressures of resource and environmental constraints, advancing the green and efficient transition of agriculture will become a new trend in China's agricultural development. In this context, the treatment of agricultural pollution, supply-side structural reform and innovation of agricultural subsidy policy are of strategic significance to the transition and upgrade of China's agriculture. 展开更多
关键词 agricultural development mid- and long-term prospects supply-sidestructural reforms transition and upgrade
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Seven-Decade Structural Transformation of China’s Industrial Economy 被引量:9
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作者 Deng Zhou Yu Chang 《China Economist》 2019年第4期14-39,共26页
Over the past seven decades since the founding of the People's Republic of China in 1949,China's industrial structure has experienced transformations in various stages,which is consistent with the general patt... Over the past seven decades since the founding of the People's Republic of China in 1949,China's industrial structure has experienced transformations in various stages,which is consistent with the general pattern of industrialization and China's domestic and international situations.These changes also have to do with China's reforms in building the socialist market economic system.China's seven-decade industrial structural transformation offers valuable experiences:In promoting its industrial development,China has persistently carried out economic reforms,kept pace with changing factor and demand structures,invested in technology importation and innovation,leveraged global resources and markets,and formulated development policies in line with specific industrial development stages.Despite industrial structural problems,China has set the stage for innovation-driven development,further opening up,and balanced regional development.China's industrial structure will keep evolving amid its transition toward a competitive industrial nation. 展开更多
关键词 industrial structure structural adjustment transition and upgrade foundingof the People's Republic of China reform and opening-up
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