查询词典 high-melting metal

Using carbon arc air gouging craft instead of old pneumatic chipping, has machining is high efficient , work condition is improved, the artifactitious metal surface is smooth, doesn't bring bad influence to the metal which is processed, use convenient, economy saving and no noise and so on merit.

采用碳弧气刨工艺代替旧式风铲，具有加工效率高、改善工作条件、加工的金属表面光洁平整、对被加工金属的性能不产生有害影响、使用方便、经济节约、无噪音等优点。

The method comprises the steps of dipping and mixing the mipor asphaltic base globular active carbon prepared by the traditional method with an inorganic metal salt solution by a certain ration; heating under an inert atmosphere to 600 to 1200 DEG C at a temperature increasing rate of 1 to 20 DEG C/min for the secondary carbonization; using acid to wash off the remaining metal inside the carbonized material, so as to obtain the asphaltic base globular active carbon with a high mesoporous rate and narrow distribution of mesoporous spertures.

本发明提供了一种浸渍金属盐二次炭化制备中孔沥青基球形活性炭的方法，该方法是将传统方法制备得到的微孔沥青基球形活性炭按一定比例与无机金属盐溶液浸渍混合，然后在惰性气氛下以1～20℃/min的升温速率加热到600～1200℃下进行二次炭化，炭化料经酸洗除去内部残留的金属后，可制得中孔率较高、中孔孔径分布窄的沥青基球形活性炭。

During spectrum tests, operating conditions, sample preparation, and other conditions can affect the test results, identified by XRD 4-4 'bipyridine and metal at a high temperature can be coordinated into a metal organic complexes.

在进行光谱测试时，操作条件、样品制备等条件均能影响测试结果，通过XRD确定4-4'联吡啶与金属在高温下可以配位成金属有机配合物。

Its very difficult to support metal on the surface of crude CNTs. Compared with Pt/C,Pt/CNTs have higher performances in term of efficiency and selectivity. It can be concluded that the interaction between metal and CNTs favors both the high activity and selectivity in cinnamaldehyde hydrogenation.

Pt/CNTs在选择性肉桂醛的选择性加氢中表现出很高的加氢活性和选择性，这是由于纳米碳管外表面独特的结构以及纳米碳管和金属之间相互作用的结果。

Several problems, such as poor micro-machinability of graphite, corrodibility and high density of metal, rise when the conventional materials such as graphite and metal applied in micro fuel cells.

传统的石墨、金属等材料用于微型燃料电池时产生了不少问题，如石墨材料微加工性能差，金属易腐蚀、密度较大等不利于应用于便携式设备。

DG research showed that there was complicated action between metal oxide and Zr4 in CuO·ZrO_2,Fe_2O_3·ZrO_2 catalysrs; metal oxide calcinated by high temperature would deoxidate.

DG分析显示，共沉淀型催化剂CuO·ZrO_2，Fe_2O_3·ZrO_2中，金属氧化物与Zr4间存在着复杂的相互作用；高温焙烧催化剂，会发生金属氧化物的脱氧现象，引发了金属的变价现象。

DG research showed that there was complicated action between metal oxide and Zr4 in CuO·ZrO_2,Fe_2O_3·ZrO_2 catalysrs; metal oxide calcinated by high temperature would deoxidate.

DG分析显示，共沉淀型催化剂CuO·ZrO_2，Fe_2O_3·ZrO_2中，金属氧化物与ZrOH(来源：A28BC论文网www.abclunwen.com4间存在着复杂的相互作用；高温焙烧催化剂，会发生金属氧化物的脱氧现象，引发了金属的变价现象。

The Schiff base transitional metal complexes of various structures and their metallomicelles as peroxidase models for the phenol and phenolic derivant oxidation have been investigated. Some results are obtained from the studies:(1) the Schiff base transitional metal complexes have high catalytic activity for the phenol and phenolic derivant oxidation, and the structure of the complexes has a great effect on its catalytic activity;(2)a novel kinetic mathematical model for the complexes and their metallomicelles catalyzing the phenolic derivant oxidation has been established;(3) the feasibility and mechanism for the phenolic derivant oxidation catalyzed by the metallomicelle(as the mimetic model of peroxidase)have been discussed.

研究了冠醚Schiff碱金属配合物作为过氧化物酶的模拟模型对酚类物质氧化反应的催化作用，取得如下结果：(1)几种冠醚Schiff碱金属配合物对催化酚类物质氧化具有良好的催化活性，其中配体结构对其催化活性有较大的影响；(2)建立了金属配合物与表面活性剂形成的金属胶束催化酚类物质氧化反应的动力学数学模型；(3)探讨了金属胶束模拟过氧化物酶催化酚类氧化反应的可行性及其机理。

The invention selects hypo- sensitive absorbing line of metal to be measured to analyze by the atom absorbing spectrometer, so alloy sample metal salt solution is diluted for direct analysis, so error induced by dilutedness can be decreased greatly, operation is easy, fast and accuracy is high.

本发明选择待测金属元素的次灵敏吸收线进行原子吸收光谱仪分析，因此无需对合金样品金属盐溶液进行高倍稀释，就能直接分析，因而可以大大减小由稀释放大的误差，操作简便、快速，准确性高。

Metal substrates, such as steel and aluminum, there is a high-quality screen business card printing and membership card making application, such as metal signs, thenameplate, enthetic, containers, and many other products often heavily dependent upon the Network Edition business card printing and membership card making ink business card printing and membership card making functional image or impression.

金属基体上，例如钢材和铝材，均有高质量的网版制卡和会员卡制作应用实例，如金属标牌、铭牌、器械带、容器和许多其他的产品时常仰赖网版制卡和会员卡制作油墨制卡和会员卡制作功能性的图像或印记。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。