查询词典 copper coin

The majority of early stage copper etching artist did drawings by means of painting at metal plate and indirectly etching the picture. At the same time, it also gave rise to a lot of representative copper etching artists, such as Albrecht Durer (1471-1528),H.

早期的铜版画家多数采用在金属版上进行绘制和间接腐蚀图形的方法作画，同时也产生了一批具有代表性的铜版画家，如丢勒(Albrecht Durer 1471-1528)，伦勃朗

The explosive clad method is used in chorine-alkaki industry to manufacture the copper-steel clad cathode plate of electrobath and solve the problem of copper and steel clad in large area.

利用爆炸焊接方法制造氯碱电解槽的铜钢阴极板，以解决纯铜与钢材大面积复合问题。

LI Xiaojie The explosive clad method is used in chorine-alkaki industry to manufacture the copper-steel clad cathode plate of electrobath and solve the problem of copper and steel clad in large area.

利用爆炸焊接方法制造氯碱电解槽的铜钢阴极板，以解决纯铜与钢材大面积复合问题。

It has 3 D positioning function, is able to install negative and positive pole plates in electrobath and take the used positive pole plate or negative copper out from the electrobath, and conveys the copper to the next workstation.

电解铜起重机是铜厂电解车间精炼铜的专用起重设备，具有三维定位功能，能够高效地将阴阳极极板装入电解槽及将阳极残极或阴极铜从电解槽中取出，送入下一工序。

Our company have nonferrous metal products are speckle copper,bronze,electroform copper and etc.and also we offer those products for decoration,gifts,souvenir,embossment,sculpture,sample machining and etc,service.

主要产品有斑铜、青铜、电铸铜等有色金属系列工艺品，能为社会提供艺术装饰、高档礼品、旅游纪念品、铜像浮雕、圆雕、城市雕塑、来样加工、制作等系列服务。

Without going into a great deal of theory regarding electrochemical principles and the solution of metals, it has been determined that corrosion of steel is stopped when its potential to a copper-copper sulfate electrode is –0.5 volt or more electronegative with the reference electrode placed close to the electrolyte/structure interface.

不需要太多的电化学原理和金属溶液理论，人们已经知道，当把参比电极放于电解质和结构界面附近，钢或铁相对于铜－硫酸铜电极的电位达到－0.5伏或更负时，钢、铁的腐蚀就会停止。

The effects of surface electroplate pure copper on oxidation failure of lead frame copper alloys for IC package were investigated.

研究了在铜合金表面电镀纯铜层保护膜对铜合金引线框架氧化失效的影响。

The investment aluminized after surface nano-crystallization of copper and electuary aluminized copper are also discussed in this paper.

并且在性能方面与纯铜相比，A12O3/Cu表面复合层的电导率和热导率降低不大，而其相对耐磨性和显微硬度均有较大提高。

At present it has 250 sets of high-speed drawing machine in all varieties. And 60 sets of domestic advanced enamelling machine are also equipped. By holding a high-quality professional team and the first class special equipments as well as the complete production control mechanism including test and inspection devise, the company annually manufactures all kinds of enamelled wire to provide winding wire which are 5000 tons of enamelled copper wire, 8000 tons of enamelled aluminum and 1000 tons of aluminum coated with copper for electric mechanical product and electric appliance.

目前拥有各类高速拉丝机近250台，国内最先进的漆包机60多台，一支高素质的专业技术人员和训练有素的员工队伍，并具有国内一流先进水平的漆包线专用设备、完善的生产过程控制及全性能测试装置，年产各种漆包圆铜线5000吨、圆铝线8000吨、铜包铝1000吨，为机电、电器产品提供绕组线材。

An investment company can be an annual output of 3,000 tons of enamelled round aluminum wire, Copper clad aluminum wire 1000 tons and 6000 tons bare Wire, the company eventually reach an annual output of 5000 tons capacity can be enamelled round aluminum wire, Copper clad aluminum wire 5000 tons and 10,000 tons Bare Wire larger wire for domestic manufacturers.

公司一期投资可年产3000吨漆包圆铝线、1000吨铜包铝线和6000吨裸铝丝，公司最终达产可年产5000吨漆包圆铝线、5000吨铜包铝线和10000吨裸铝丝为国内较大的电磁线制造企业。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。