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油管套环间隙过大 机油泄漏频频烧瓦
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作者 张有 《农业开发与装备》 1997年第2期43-43,共1页
一台东方红—28型拖拉机,烧了第二道连杆瓦后,折下连杆瓦,彻底清洗了机油滤清器,吹洗了机油管道,并对轴瓦的配合间隙进行了检查,换了一剖新瓦片,装后试车,瓦又烧了。又拆下轴瓦检查。
关键词 管套环 油泄漏 连杆瓦 配合间隙 下轴瓦 隔离衬套 拖拉机 油管道 机油滤清器 机油压力
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Reconciling Industry and Environment: Optimal Regulation Intensity for Industries
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作者 沈能 《China Economist》 2012年第4期52-62,共11页
Constrained by the dual mission of supporting industrial growth and reducing emissions, China's traditional emission reduction-oriented environmental policies unavoidably face a dilemma. Taking environmental efficien... Constrained by the dual mission of supporting industrial growth and reducing emissions, China's traditional emission reduction-oriented environmental policies unavoidably face a dilemma. Taking environmental efficiency as the exclusive indicator for the relationship between environmental performance and industrial development, the author calculated the environmental efficiency of China's industries under different pollutant disposability assumptions, while also considering environmental pollution. In addition, based on the assumption of industry heterogeneity, the author examined the non-linear relationship between China's environmental regulation and environmental efficiency and calculated the optimal regulation environment for industries. According to this study, when impact of undesirable outputs (pollutant emissions) is considered, environmental regulation and environmental efficiency are positively correlated, which to some degree validates the Porter Hypothesis. At present, environmental regulation has significant positive effects on clean production industries but shows a lag effect on pollution-intensive industries. The degree of environmental regulation and environmental efficiency show an "inverted U"shaped relation and display three thresholds. It should be noted, however, that the relationship between regulation and efficiency may vary across industries. These findings have clear policy implications: China should adjust its traditional emission reduction-oriented environmental polices by targeting environmental efficiency. At the same time, rather than continually increasing the level of environmental regulation, the government should establish standards for individual industries that emphasize flexibility. 展开更多
关键词 environmental regulation environmental efficiency HETEROGENEITY
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