互联网的迅速发展使支付方式发生了巨大变化。同时,技术进步和社会发展也推动货币形式不断演化,数字化支付工具逐渐进入人们的视野。世界各国都在研发自己的法定数字货币,积极拥抱无现金时代。国际清算银行(BIS)发布的...
Determination of REE,U,Тh,Ba,and Zr in simulated hydr... CNKI文献
A fast, reliable and precise method for the determination of Ba, Zr, Th, U, La, Ce, Eu, Hf and Gd in leaching solutions containing up to 1 mol/L FeCl3 by inductively coupled plasma-atomic emission sp...
Marin Ayranov Joaquin Cobos... 《Journal of Rare Earths》 2009年01期 期刊
“有原则的实用主义”:欧盟对中欧经贸关系态度探析（英文） CNKI文献
The EU-China relations have been experiencing noticeable changes in recent years, with the EU turning realist and putting more emphasis on interests in its interactions with China. This "princip...
Spatial distribution of the potential forest biomass a... CNKI文献
Background: European forests are considered a crucial resource for supplying biomass to a growing bio-economy in Europe. This study aimed to assess the potential availability of forest biomass from E...
Pieter Johannes Verkerk Joanne Brighid Fitzgerald... 《Forest Ecosystems》 2019年01期 期刊
Investigation of Heat Transfer of Tube Line of Stagger... CNKI文献
This article presents the results of experimental investigation of heat transfer process, carried out using the model of heat exchanger. Two-phase statically stable foam flow was used as a heat trans...
Mindaugas Jakubcionis 《Journal of Thermal Science》 2015年03期 期刊
本文首先对政体更迭的转型论与巩固论的内涵进行了剖析和比较。在此基础上,文章从转型的起点和旧制度的崩溃等四个方面重点分析了东欧国家在政体转型中的特征,这些国家政体的转型是迅速的、非暴力的和确定的,但其政权...
1背景介绍自20世纪70年代,芬兰东南部维堡地块环斑花岗岩便以其晶洞状伟晶岩而闻名。部分晶洞产出顶级烟晶以及优质无色或蓝色托帕石。自1984年以来还发现了世界级的金绿柱石晶体。2002年10月5日～2004年5月15日期间,...
Currency Undervaluation and Economic Rebalancing towar... CNKI文献
The present study investigates the main determinants of the employment share of the service sector using a panel of 66 countries over the period 1983-2007.Based on alternative measures of currency mi...
Mapping of groundwater potential zones in the drought-... CNKI文献
The southern regions of Madagascar have the country's lowest water supply coverage and are highly vulnerable to drought.Access to potable drinking water is a major challenge for the local populat...
Charles Serele Ana Pérez-Hoyos... 《Geoscience Frontiers》 2020年04期 期刊
关键词： Groundwater / potential / zones(GWP) / Overlay
下载（3）| 被引（0）
工业革命使英国形成了明确的地区分工:英格兰西北部为现代大工业区,以第二产业部门为主;东南的伦敦及周边以发展国内外贸易、金融业和高端服务业即第三产业部门为主;中间广大地区以商品化农牧业即第一产业部门为主。生...
The Sabah Conflict: Grim Vision for ASEAN Security Com... CNKI文献
Since the inception of the Association of Southeast Asian Nations (ASEAN) in 1967, the member states have become increasingly interconnected and there has been correspondingly greater integration at ...
The European X-ray Free-Electron Laser: toward an ultr... CNKI文献
The status of the European X-ray Free-Electron Laser(European XFEL), under construction near Hamburg, Germany, is described. The start of operations of the LCLS at SLAC and of SACLA in Japan has alre...
M.Altarelli 《High Power Laser Science and Engineering》 2015年03期 期刊
关键词： femtosecond / lasers / and / applications
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基于同步辐射X射线成像技术,对激光复合焊7020-T651铝合金接头内部的微气孔进行了研究,对气孔的体积、圆整度、扁平度及气孔形心至自由表面的距离等三维特征参数进行了统计分析与拟合.结果表明,铝合金熔焊微气孔主要为...
Adjustment of EU Neighborhood Policy:From Value-Driven... CNKI文献
As security in its neighborhood deteriorates,EU is making major adjustment to its Neighborhood Policy.The new policies are no longer value-driven,transformation-targeted,and single-handed,but more in...
JIN LING 《Contemporary World》 2016年03期 期刊
关键词： Adjustment / of / EU / Neighborhood
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轻子散射实验是探索核子与原子核结构的理想工具。中国电子离子对撞机(Electron Ion Collider in China,EicC)建议书设想在已开建的强流重离子加速器装置(High Intensity heavy ion Accelerator Facility,HIAF)的基础...
中小企业越来越期望对他们自己环境和社会影响负起责任来(正如跨国公司所做的那样),理解不同利益相关者的兴趣和要求,并且通过更大的透明度证明自己的行为是负责任的.许多要素既可以阻碍也可以驱动较小企业推动法人环...
Michael Kuhndt Justus von Geibler... 《产业与环境(中文版)》 2004年04期 期刊
The euro is an important achievement of European integration and the construction of the European Union(EU) single market. As a primary international currency second only to the US dollar, the euro f...
The Irish Border Issue in Brexit CNKI文献
After a long period of obsolescence, the Irish border issue has reemerged in the context of Brexit, and any solution will affect not only the UK’s national unity, but also the Northern Ireland peace...
Qu Bing Wang Shuo 《Contemporary International Relations》 2019年06期 期刊
关键词： Brexit / Irish / border / "Backstop"Arrangement
下载（13）| 被引（0）
事实上,在复合材料的各种成型工艺中,拉挤工艺具有最广泛的用途.拉挤制品可以制成和用户最终要求的形状一样大,而且可以使之满足机械强度、耐化学性能和耐电性能.所有拉挤产品都具有稳定的质量和价格上的竞争力.
