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一类积微分方程组解界面的产生 被引量:1
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作者 杨成荣 《吉林大学自然科学学报》 CAS CSCD 北大核心 2001年第4期1-7,共7页
研究含小参数 ε的积微分方程组εuεt-Jε* uε+uε=f ( uε,vε) =F( uε) -vε,vεt-DΔvε =uε -γvε界面的产生 。
关键词 积微分方程组 界面 卷积算子 界面产生 小参数
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软X射线高效聚光镜
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作者 刘晓明 《中国科教创新导刊》 1996年第1期32-32,共1页
软X射线高效聚光镜刘晓明译王小平校众所周知,X射线作为现代科学中一个不可缺少的工具,在解析物质的原子级结构等方面发挥着巨大的作用。然而,由于其可使用的光量有限,人们至今仍将高性能光学系统的开发作为一项重要的研究课题,... 软X射线高效聚光镜刘晓明译王小平校众所周知,X射线作为现代科学中一个不可缺少的工具,在解析物质的原子级结构等方面发挥着巨大的作用。然而,由于其可使用的光量有限,人们至今仍将高性能光学系统的开发作为一项重要的研究课题,在不断地探索。最近,日本松下技研公... 展开更多
关键词 软X射线 聚光镜 X射线 反射率 反射光 交替层 点光源 原子级结构 界面产生 开发的进展
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The Production of the Sequence -UI- by Francophone Learners of English
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作者 Jean-Paul Kouega 《Sino-US English Teaching》 2017年第4期262-271,共10页
This paper considers the renderings of the sequence -UI- by Cameroonian, Gabonese, and native French users learning English with the view to finding out whether French users speaking different L 1s pronounce this sequ... This paper considers the renderings of the sequence -UI- by Cameroonian, Gabonese, and native French users learning English with the view to finding out whether French users speaking different L 1s pronounce this sequence in different or similar ways. The data were recordings of items containing -UI- and the contrastive method of analysis was used. It was found that this sequence is rendered in two ways by the learners. Besides, different L2 French-speaking learners tend to pronounce it in the same ways and so do L2 and L1 French-speaking learners. It can therefore be hypothesised that Francophone speakers tend to draw more from French when they speak English than from their respective L 1s. 展开更多
关键词 L3 English learner France Cameroon GABON CONSONANT VOWEL
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Design-Manufacture Interface Relationship Management in Supply Chain
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作者 朱岩梅 尤建新 Paul Schoensleben 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第5期680-683,共4页
As firms come under greater market pressure, the management of the inter-functional design/manufacture relationship becomes a more important competitive variable. The characteristics of the design-manufacture interfac... As firms come under greater market pressure, the management of the inter-functional design/manufacture relationship becomes a more important competitive variable. The characteristics of the design-manufacture interface were analyzed, and several methods of the design-manufacture interface relationship management were compared. Based on theories concerned and enterprise practice, how to manage the relationship of design-manufacture interface to reduce the product cost and shorten the time-to-market was demonstrated, finally the competitive advantage was improved. 展开更多
关键词 supply chain DESIGN MANUFACTURE design-manufacture interface relationship
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软X射线的高效聚光镜
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《航空精密制造技术》 1996年第2期24-24,共1页
软X射线的高效聚光镜最近,日本松下技研公司成功地研制出一种可高效率地会聚软X射线(波长0.5~50urn)的聚光镜,从而拓宽了X射线的应用领域.松下研制的这种聚光镜采用两种密度相异的极薄的物质交替叠加构成的层叠式结构... 软X射线的高效聚光镜最近,日本松下技研公司成功地研制出一种可高效率地会聚软X射线(波长0.5~50urn)的聚光镜,从而拓宽了X射线的应用领域.松下研制的这种聚光镜采用两种密度相异的极薄的物质交替叠加构成的层叠式结构。这种结构利用了软X射线在两种接触... 展开更多
关键词 软X射线 聚光镜 反射率 X射线 反射光 交替层 界面产生 物质交替 反射和透射 椭圆形柱
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