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初中化学选择题解答的“有痕化”尝试 被引量:2
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作者 沈银行 《化学教与学》 2017年第4期58-59,共2页
选择题是初中化学知识考查的重要题型,其特点是信息量大、灵活性强、覆盖面广。运用“有痕化”模式对选择题进行训练,既能加深学生对知识的理解,又能提升学生的思维能力,这对初中化学教学的效率的提升具有积极的推动作用。
关键词 有痕化 定义辨析
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关键零部件加工实现有痕化管理
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作者 张振环 郑翠红 《山西纺织服装》 2015年第2期25-27,共3页
在生产的关键零部件上采用打钢印、激光喷码、激光刻字等方法,保留原始信息进行有痕化管理。做到零部件的信息能从现场及用户能追踪到具体的操作者,实现100%的责任落实,提高操作者责任心和责任意识,提升产品质量.
关键词 打标记 激光喷码 有痕化 追溯 质量
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用科学发展观原理探广播新闻宣传“无痕化”之径
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作者 赵飞 《新闻世界》 2014年第6期50-51,共2页
本文从科学发展观原理切入,分析新闻宣传"有痕化"的成因及其产生的危害,探讨新闻宣传"无痕化"的有效途径,使新闻宣传从"有痕"变为"无痕"。
关键词 科学发展观 有痕化
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The transformation and concentration of environmental hazardous trace elements during coal combustion 被引量:1
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作者 YAO Duo-xi ZHI Xia-chen 《Journal of Coal Science & Engineering(China)》 2010年第1期74-77,共4页
Studied the content and distribution of 18 environmental hazardous trace elementsin the lignite, fatty coal, anthracite and its burnt products by combustion simulatingexpriment in the one-dismensinal boiler.The transf... Studied the content and distribution of 18 environmental hazardous trace elementsin the lignite, fatty coal, anthracite and its burnt products by combustion simulatingexpriment in the one-dismensinal boiler.The transformations and concentration of 18 traceelements during different coal combustion were discussed.The results show that there aresome content distribution of 18 hazardous trace elements in every burnt product, but thelaw of concentration and dispersion of every trace element during different coal combustionis very different.Experiment results indicate that the transformation and concentrationof trace elements during coal combustion are related to the element contents and occur-rencesof trace elements in raw coal, but are also affected by some man-made factorssuch as the combustion method of boiler, combustion temperature and atmosphere, thetype of precipitators and so on. 展开更多
关键词 environmental hazardous trace elements transformation and concentration coal combustion
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