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八钢哈密球团40㎡环冷机易发故障及改造预防措施 被引量:1
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作者 刘洋 《科技传播》 2010年第15期101-101,66,共2页
环冷机是链蓖机回转窑三大主机设备之一,负责完成氧化球团的冷却及二次氧化,并为系统提供热能补充。本文对笔者所在单位的环冷机在运行中易发故障及改进措施处理方法进行了探讨。
关键词 氧化球团 环冷机 改造预防措施
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泵P8129轴断的原因及改造
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作者 张素君 严媛 《石油和化工设备》 CAS 2007年第2期60-61,共2页
对熔盐泵P8129断轴进行了原因分析,并通过改造泵调整垫及轴承箱等措施来避免轴承温度升高,从而避免断轴事故的发生。
关键词 P8129 轴断 原因 改造预防措施
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Comparison of the Evolution of Genetically Modified Food Safety Policies between the United States and the European Union 被引量:1
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作者 佘丽娜 张雅琼 +4 位作者 张俐 贾阳映 徐文婷 谢世清 梁泉 《Agricultural Science & Technology》 CAS 2012年第9期2024-2028,共5页
With the research on and development of Genetically Modified Food (GMF), people's attitude toward GMF may fall into two divergent categories, typical- ly represented by the United States(US) and the European Unio... With the research on and development of Genetically Modified Food (GMF), people's attitude toward GMF may fall into two divergent categories, typical- ly represented by the United States(US) and the European Union(EU), respectively. The former follows a "sound science principle" and firmly objects to the precautionary principle, namely a permissive policy of positive support of and voluntary labelling on GMF; while the latter adopts a cautiously precautionary principle, requiring mandatory labelling and traceability. From the standpoint of regulatory principles, together with corresponding supervisory measures and relevant provisions, this paper compared the execution of directives and provisions on GMF from the initial policies enacted by the US and EU to current situation combined with the track and analysis of latest polic ies issued. 展开更多
关键词 Genetically Modified Food (GMF) the United States(US) the EuropeanUnion(EU) POLICIES SAFETY Precautionary principle Labelling
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