The nation boasts veins of coal, iron ore, limestone, magnesite, graphite, copper, zinc, lead and precious metals.
这个国家拥有煤炭、铁矿石、石灰石、菱镁矿、石墨、铜、锌、铅和贵金属等矿脉。
The sessile drop technique is used to measure the contact Angle between molten aluminum and graphite or copper coated graphite.
采用改进的座滴法分别测定了铝熔体与石墨、镀铜石墨的接触角。
To determine trace copper and lead and cadmium in water by using the method of Graphite Furnace Atomic Absorption spectrophotometry in the paper.
用石墨炉原子吸收分光光度法对水中痕量铜、铅、镉样品进行测定。
The processing technology of electroless copper plating on graphite powders by iron powder method and formaldehyde method were studied and evaluated.
研究比较了两种化学方法——铁粉法和甲醛法在石墨粉表面镀铜的工艺。
The results indicate that, the fracture toughness of copper impregnated graphite is not much greater than that of graphite at room temperature, because the liquid copper does not wet the graphite.
石墨渗铜材料的断裂韧性与高强石墨相比基本相当，主要是由于铜相与石墨结合强度低而未能发挥铜相增韧的作用。
Adding different alloy combination of re, copper and titanium, then through gestation and nodulizing disposal, we got the fine texture of ferrite pearlite and spheroidal graphite.
通过在中硅耐热铸铁中添加不同组合的合金元素稀土、铜、钛使其合金化，经过孕育和球化处理，得到铁素体+珠光体+球状石墨的金相组织。
Xielashi, copper, graphite and other minerals processing and marketing.
叶腊石、莹石、石墨等矿产品加工、销售。
A method for the determination of gallium by the tantalum foil-lined graphite furnace atomic absorption spectrometry with vanadium and copper as mixed matrix modifier has been investigated.
提出用钒和铜混合基体改进剂衬钽管石墨炉原子吸收测定镓的方法。
Metallographic structure of copper coated graphite powder and sintering material were analyzed and the reason of the material having high conductivity was illustrated.
本文还分析了这种钢镀覆石墨粉末及其烧结材料的金相结构，解释了材料的高导电性的原因。
It is because of these unparalleled advantages that graphite has gradually replaced copper as the preferred material of EDM electrode.
正是这种无可比拟的优势，石墨逐渐取代铜成为EDM电极的首选材料。
It is simple and quick to determine trace Pb and Bi in pure copper using the graphite furnace atomic absorption spectrophotometry.
石墨炉原子吸收光谱法测定纯铜中痕量铅和铋，方法可靠，简单快速。
So the means cannot control leak the material, then possibly is the graphite pad or the copper collar wears (for example seal face not to be smooth seriously, gap big).
如此办法不能控制漏料，则可能是石墨垫或铜环磨损较严重(如密封端面不光滑，间隙大)。
It is involved in the exploration of iron ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite etc.
该公司涉及的领域有铁矿石，铜，磷酸岩，石灰石，白云石，石膏，膨润土，菱镁矿，金刚石，锡，钨，石墨等的探测。
In this paper, the graphite copper composites made from copper coated graphite powder are adopted. The bending strength is measured and the fracture is analyzed.
本文用镀铜石墨粉制备石墨-铜复合材料，并测定了材料的抗弯强度，对断口进行扫描分析。
The experimental research on 'diffusion bonding of spheroidal graphite cast iron and copper is conducted by adopting the self-made equipment of small vacuum diffusion bonding.
采用自制的小型真空扩散接合装置，进行了球铁与铜扩散接合试验研究。
Electroless copper plating was Used for graphite powder to solve the interface problem in metal7 graphite composite material manufacture and improve its comprehensive properties.
在石墨粉表面化学镀铜，以解决金属-石墨复合材料制造中的界面结合力问题并提高其综合性能。
A process for through hole plating is reviewed in which conventional electroless copper plating is replaced by deposition of a carbon black-graphite layer.
综述了一种对印制线路板通孔镀的方法，即在孔壁上沉积有电镀用的碳黑—石墨层，以取代传统的化学镀铜工艺。
The erosive property and principle of copper-infiltrated graphite as solid rocket motor(SRM) throat insert and tailpipe nozzle bushing are presented.
介绍了石墨渗铜材料作为固体火箭发动机（SRM）喉衬与长尾管衬套的烧蚀特性和机理。
By means of the analyses of SEM and metallograph and physical tests, the microstructure, properties of composites made from copper-coated-graphite powder were studied.
通过金相、扫描电镜分析和物理性能测试等手段，对由镀铜石墨粉制备成的复合材料的组织、性能进行研究。
Metallographic structure of copper coated graphite powder and sintering material were analyzed and the reason of the material having high conductivity was illust...
本文还分析了这种钢镀覆石墨粉末及其烧结材料的金相结构，解释了材料的高导电性的原因。
In the paper, the cathode spot movements and chopping current of pure graphite and copper-impregnated metallized graphite (Cu-C) in vacuum were investigated.
研究了纯石墨和铜-石墨材料的阴极斑点的特性及真空电弧截流现象。
The tests show that the solid state products obtained from the organic exhaust gas by plasma jet mainly contain nanosheet graphite and carbon-coated nanometer copper powders.
实验结果表明，有机废气在常压等离子体射流的作用下分解为单质碳和无害气态产物。
The three-dimensional network copper-carbon composite pantograph was obtained by hot pressing and sintering with carbon fiber, copper powder and titanium powder, and graphite powder as raw materials.
利用碳纤维布和铜粉、钛粉、石墨粉等为原料，采用热压成型、烧结等工艺制备三维网状铜一碳复合受电弓滑板。
Nano silver-copper-graphite composites were prepared by powder metallurgy method.
采用粉末冶金方法，制备了纳米银-铜-石墨复合材料；
The invention also provides a manufacturing method for copper-based antifriction compound powder which comprises: A. the step of preparing chemical copper plating coating graphite powder;
本发明还提供一种铜 基减摩复合粉末的制造方法，包括：A。制备化学镀铜包覆石墨粉步骤；
The copperplating process of graphite powder was investigated and the optimum process parameters were obtained by comparing the copper-plating results.
研究了用刷镀镀铜防渗碳时的工艺参数对镀层防渗碳效果的影响 ，及渗碳时间与防渗碳所需的最小镀层厚度之间的关系。
Ltd Electrical Alloy Company of which the main products involve tungsten-base contact material, integrated contact, silver-base contact material. SF6 breaker contact, copper-graphite contact etc.
其主导产品有：钨基触头材料、整体电触头、银基触头材料、SF 6断路器电触头、铜-石墨触头等产品。
Ltd Electrical Alloy Company of which the main products involve tungsten-base contact material, integrated contact, silver-base contact material. SF6 breaker contact, copper-graphite contact etc.
其主导产品有：钨基触头材料、整体电触头、银基触头材料、SF 6断路器电触头、铜-石墨触头等产品。
应用推荐