查询词典 alumina

The concentration of the gas could be achieved by measuring the change of the conductivity. In the experiments, the gas sensor was prepared by spreading the water solution of carbon nanotubes between the interdigitated Au electrode, which was splashed on alumina. In this paper, three methods, such as mixing palladium and copper chloride, deoxidizing palladium and copper by chemical and electrochemical means, were used to doping palladium and copper in multi-wall carbon nanotubes.

实验中我们采用单壁和多壁纳米碳管作为敏感材料，在叉指金电极间涂布纳米碳管悬浊液作为气敏膜，用于有机挥发物如甲醛、苯、甲苯和二甲苯的检测，并着重研究了掺杂氯化钯和氯化铜盐溶液、化学和电化学方法掺杂钯和铜金属颗粒对多壁纳米碳管传感器的气敏性能的影响。

Secondly, by studying on the effect of metalized diamond on improving the composites bending strength, whose diamonds were coated by magnetron sputter Ti, Mo and TiN, electroless polyalloy Ni-Cr-P and Ni-W-P, molten salt coating Ti-Co-Cu, Cr-Ni-Cu and W-Cu-Co etc., some basic characteristics of ideal metalizing coating were presented. An original molten salt coating technology was also developed, and the coating equipment required is only a muffle oven and an alumina capsule, which is very suitable for tool factories in China.

其次，通过对磁控溅射镀Ti、Mo、TiN，化学镀Ni-Cr-P、Ni-W-P及熔盐沉积Ti-Co-Cu、Cr-Ni-Cu、W-Cu-Co等镀层对提高复合材料抗弯强度等方面的较系统的研究，提出了理想镀层应具备的几个基本特征；并针对我国金刚石工具厂家多、规模小的特点，创造性地开发出了一种不需要真空设备和保护气氛，只需要马弗炉和坩锅就可以进行镀膜的熔盐金属化技术。

There is an activation process for passivated alumina supported molybdenum nitride and carbides catalysts at the initial stage of hydrazine decomposition.

在肼分解反应初期，钝化态的氮化钼和碳化钼催化剂有一个活化的过程，随着启动次数的增加，催化剂的初活性逐渐提高，最后达到稳定。

The shortage of proportioning equipment in alumina production of Sintering Process is described.

针对氧化铝烧结法配料生产设备存在的不足，采用变频调速技术对其进行了改进，不仅改善生产过程使生料浆指标合格率得到提高，而且实现了节约能源，提高了企业经济效益。

An explanation based on the ionic constitution of slags is offered for thisbehaviour of alumina.

对Al_2O_3的这种行为，根据炉渣的离子结构理论提出了解释。

Four tons of bauxite make two tons of alumina which in turn is smelted to produce one ton of aluminum.

4吨铝土矿可生产2吨氧化铝，而2吨氧化铝可冶炼成1吨铝。

Bauxite is aluminium ore which is smelted into alumina and then refined into aluminium.

铝土矿是一种铝矿石，经冶炼可加工成氧化铝，而氧化铝在经精练加工成铝。

Effect of alumina doping on structural,electrical,and optical properties of sputtered ZnO thin films .

掺锰氧化锌的结构和光学特性。

At last, the effective approach was found that the 024-antibiotic can be purified by freez-dry, methyl alcohol soaking, acetone, chloroform, and methyl alcohol continuously washing, alumina and silica gel column chromatography.

粗提制品的理化性质研究表明，024放线菌所产抗生素为无色晶体，易溶于水，可溶于甲醇和乙醇，且在甲醇中的溶解度较大，不溶或难溶于丙酮、氯仿、正丁醇、乙酸乙酯与苯。

The effects of limestone addition on the strength of alumina cement and the hydration mechanism have been investigated.

研究石灰石作为混合材对铝水泥强度的影响，探讨其水化作用机理。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48