China is already the world's biggest producer of aluminium, zinc and lead; the second largest of tin and among the top10 in copper, nickel and silver. 锌、铅生产国,第二大锡生产国,同时在铜、镍和银的产量上也位居全球前十名。
A quality black leather scabbard with nickel silver tip and throat is included. 配有高品质的黑色皮革剑鞘,镍黄铜鞘尾和鞘喉。
Iron, nickel, copper, silver, gold, iridium, or ruthenium may be included as cocatalyst metals. 铁、镍、铜,银、金,铱或钌,可用作复合催化剂金属。
The process formula of acid bright copper plating, acid bright nickel plating,( silver) plating and various colour gold plating on fresh flowers were presented. 并给出了鲜花上酸性光亮镀铜、酸性光亮镀镍、镀银以及镀各种彩色金的工艺配方。
What other functions does a clearing bank have except the above mentioned? All but the penny and the nickel is make of silver. 除了收付往来款项以外,清算银行还有哪些作用?除一分和五分币外,其余硬币都是用银铸造的。
This Metropolitan piano with all nickel features and a silver plate is instantly becoming a best seller and is only available through Hallet& Davis. 这都与所有钢琴特点和镍的银碟是立即成为畅销书,只可通过Hallet和戴维斯。
A coin worth one-hundredth of the value of the basic unit. All but the penny and the nickel is make of silver. 价值为百分之一基本货币单位的硬币。除一分和五分币外,其余硬币都是用银铸造的。
Researches on the technique of using nickel instead of silver as the electrodes of ceramicon 陶瓷电容器电极以镍代银技术的研究
Objective To establish a new method for determination of copper, nickel, silver, lead, cadmium and mercury in water with solid phase extraction followed by rapid high performance liquid chromatography. 目的建立水中镍、铜、银、铅、镉和汞的快速分离柱高效液相色谱测定方法。
Indicators for prospecting copper, nickel, lead, zinc, silver, gold, mercury, tungsten, tin, rare and rare earth and radioactive metals have been discussed. 总结了铜、镍、铅、锌、银、金、汞、钨、锡、稀有稀土放射性金属矿找矿标志。
With bright nickel strike plating before pulse non-cyanide silver plating, brighter and finer silver coatings with stronger anti-tarnish property and corrosion resistance can be obtained. 光亮镍打底后再脉冲无氰镀银,可获得更加光亮、结晶细致的镀银层,且抗变色性能及耐蚀性均增强。
In order to acquire other lacquer-metal material, this paper carries out metallization treating on lacquer surface with electroless plating method, and bright coatings of nickel, copper, silver or lead dioxide has been prepared. 本文就利用化学镀技术对生漆材料表面进行化学沉积一层光亮的金属铜、镍、银等而获得生漆金属复合材料。
In this paper, the advantages and disadvantages of new lead-free final finishing of PCB, for example, electroless nickel/ immersion gold, immersion silver, immersion tin, organic solderability preservative ( OSP) and electroplating nickel/ electroplating gold are reviewed. 评述了适应新环保新法规要求的印制板无铅表面终饰技术,如化学镀镍/置换镀金、置换镀银、置换镀锡、有机保焊剂(OSP)以及电镀镍/电镀金等工艺的优缺点。
The metallographic etching process for Ag-Ni composite was different from the divisible etching processes for nickel or silver because of the variation of etching behaviours. Ag&Ni复合材料的金相浸蚀不同于单独银和镍的浸蚀,其浸蚀行为发生了一些变化。
Conclusion This method can be applied to the determination of nickel, copper, silver, lead, cadmium, and mercury in water with good results. 结论该方法用于测定环境水样中的痕量镍、铜、银、铅、镉和汞,结果令人满意。
Application of butynediol in plating solutions for nickel, silver, copper, palladium plating and for Ni-Fe, Zn-Ni-Fe alloy plating is reviewed with twelve bath formulae and thirty references. 综述丁炔二醇在镀镍、银、铜、钯以及镀镍铁、锌镍铁等合金的镀液中的应用。附镀液配方12个,参考文献30条。
Self-lubricating wear resistant coating is prepared by plasma spraying using chromium carbide, nickel chrome, fluoride-metal, and silver composite materials. 采用碳化铬、镍铬合金、氟化物共晶体和银的复合粉末为原料,通过等离子体喷涂方法制备高温耐磨自润滑涂层。
Study on Properties of Nickel Silver Containing High Nickel 高镍锌白铜的性能研究
Main elements such as copper, nickel and cobalt and precious metal elements such as gold, silver and platinum have an obvious enrichment regularity, which coincides with the Computer modelling results. 铜、镍、钴等主要元素和金、银、铂等贵重金属元素赋存规律明显,与矿化富集规律计算机模拟结果吻合。
Some processes have been created to substitute it, such as organic solderability preservative ( OSP), electroless nickel immersion gold ( ENIG), immersion tin, and immersion silver. 由此,产生了一些替代工艺,包括有机焊接保护剂、化学镀镍/金、化学浸锡以及化学浸银等。
The toxicity of vanadium, nickel, cobalt, beryllium, silver on Escherichia coli 钒、镍、钴、铍、银对大肠杆菌(escherichiacoli)的毒性
Some metallic elements, such as aluminum, chromium, iron, nickel, copper, silver, manganese, magnesium, cobalt, rhodium, zinc, cadmium, vanadium, molybdenum, titanium and so on are used as the catalytic active components. 催化活性组分主要有:铝、铬、铁、镍、铜、银、锰、镁、钻、铑、锌、镉、钒、钼、钛等金属元素。