包层金属的

A large fraction of helically coiled CNT product could be obtained by facilely changing the experimental conditions.

小粒径的催化剂金属催化活性良好，而较大颗粒的金属催化剂则被石墨层包覆，失去了催化活性。

In this work, Ag/TiO_2 was opted, the synthesis and UV-Vis. spectral property of nanoparticles with titanium dioxide as the covering shell and silver as the inner core were discussed.

论文以Ag/TiO2为体系，重点研究以二氧化钛为包覆层、金属银为核的纳米粒子的合成与制备，着重讨论了其紫外一可见光吸收性能。

Blade assembly is cured at 250℉ in a machined metal mold. After curing, the blade is trimmed, the Polyurethane leading-edge erosion strip is applied, and the blade is finished and balanced. Tungsten leading-edge weights in the outboard 50% of the blade provide aeromechanical stability, and tungsten tip

主旋翼翼梁以石墨、玻璃纤维及环氧树脂模合而成，诺美克思蜂巢结构的翼后缘夹心黏附於翼梁及旋翼后缘强化结构上，组成后在华氏250度的预热金属模上包里玻璃纤维叠层，经过修裁，加上聚配胺抗腐蚀片后才告制作完成。

Metallic nickel powder is taken as a matrix; a chemical method is adopted to prepare a product required by cladding ferrites on the surface of the nickel powder; the mass ratio of the ferrites to the nickel compound powder is between 1 to 5 and 1 to 0.01; the grain diameter of the nickel powder is 0.5 to 5 microns; the ferrites are ferrites of spinel type or ferrites of magneto plumbite type.

以金属镍粉作为基体，采用化学方法在镍粉表面包覆铁氧体层制得所需产品，铁氧体与镍复合粉体的质量比为1∶5～1∶0.01，镍粉粒径为0.5～5μm，铁氧体为尖晶石型铁氧体或磁铅石型铁氧体。

Inorganic salts produced in combustion of pyrotechnically generating aerosol fire extinguishing agent are strongly hygroscopic and potentially corrosive to metal surfaces in humid circumstances.

针对固体微粒气溶胶灭火剂对金属材料表面产生腐蚀性的问题，在气溶胶发生装置的释放通路中，通过汽化的十八胺对气溶胶固体颗粒进行原位表面包覆，采用扫描电镜和光电子能谱表征了包覆效果，对包覆前后气溶胶粒子的吸湿性和腐蚀性进行测试，结果表明有机包覆层的存在有效抑制了气溶胶颗粒的吸湿，达到了降低灭火气溶胶对铜片腐蚀性的目的

The results show that the coverage area of tungsten film on diamond surface is above 90% and the steady tungstenic carbides WC and W2C are created by this technology. The tungsten film coated on diamond is realized.

结果表明，该方法可在金刚石表面镀覆上一层覆盖面达到90%以上的金属钨膜，且生成稳定的碳化物WC和W2C，得到由难熔金属钨包覆的金刚石。

In this paper, several coloring pigments were synthesized and the sheet metal powders were coated by these pigments with the technology of super powder preparing and particle compositing. The coated composite particles were prepared by these, and the metallic luster of the metal powders were defiladed. The mechanism and the processing conditions of composite particles were researched.

本论文以超细粉体制备及粒子复合技术为基础，在金属粉表面包覆一层红外透明性较好的着色颜料，遮盖金属粉的金属光泽，制备出包覆式复合粒子，对复合粒子的制备的机理及工艺条件进行了研究。

The present invention relates to an ultraviolet detector and manufacture method thereof, in which a buffer layer is formed on a baseplate and a P-type GaN layer is formed on the baseplate by using epitaxial method. By availing ion-distribution-and-vegetation technology, a first N-type GaN layer is vegetated and invested in the P-type GaN layer by distributing and vegetating Si.sup.+ ions in that layer, and a second N-type GaN layer having a thicker ion concentration is invested in the N-type GaN layer.

专利简介本发明系关於一种紫外光检测器及制程方法，其主要系在一基板上形成一缓冲层，利用磊晶法在缓冲层上形成一P型氮化镓系层，并接著以离子布植技术将Si+离子适当地布植於该P型氮化镓系层中，形成一N型氮化镓系层及包覆在此N型氮化镓系层中且布植浓度更高的另一N型氮化镓系层，最后在该P型氮化镓系层及第二N型氮化镓系层上分别镀上一环状金属层及另一金属层，以作为欧姆接触层。

This study was conducted to examiune the fibrotic effect of Ni-Ti and 317L al loys in esophagus.The extract fluid from Ni-Ti,317L alloys was made according t o the ASTM standards of U.S.A. The Fb of esophageal scar was cultured primarily ,then incubated with alloy abstract fluid. The proliferating activity of Fb was measured by MTT at 4, 24, 48, 72 hours in the course of culturing. The esophagu s embedding test of Ni-Ti,317L alloys was made according to ASTM standards of U .S.A.The tissue around the alloys was taken at weeks 2 and 12,and the pathologi c changes were analysed.

为探讨新型支架材料Ni-Ti、317L合金在食管局部的致纤维化作用，按美国ASTM标准制备NiTi、317L合金的金属浸提液；&组织块培养法&原代培养食管壁疤痕的成纤维细胞，传代后以金属浸提液进行培养，分组后分别培养4、24、48、72 h，MTT法检测不同培养时间后Fb增殖功能的变化；按美国ASTM标准进行NiTi、317L合金试件的食管壁内包埋实验，即将金属试件经表面处理后直接置入食管壁粘膜层与肌层之间，术后2、12周取出包埋组织，分析试件周围组织的病理变化，并进行胶原纤维染色，观察纤维形成状况。

Disclosed are an adhesive composition for a metal foil which comprises a material wherein a tracking resistance test is carried out according to the IEC method by making a thickness of an adhesive layer 30 to 40 mum, using a copper foil pattern with a width of 4 mm and making a distance between electrodes 0.4 mm, then the adhesive layer dissolves out for the first time when 5 drops or more of an electrolyte are dropped thereon, an adhesive-coated metal foil, a metal-clad laminate, a wiring board, a multi-layer board and a multi-layer wiring board using the same.

本发明公开了一种用于金属薄片的粘合剂组合物，它含有一种材料，其中，抗电弧径迹测试是按照IEC方法进行的，粘合剂层的厚度被做成30至40μm，使用了具有4mm宽度的铜薄片图形，并使电极之间的距离为0.4mm，然后，当5滴或更多的电解液被滴加其上时，粘合剂层被首次溶解掉。使用它的一种粘合剂涂覆的金属薄片，一种金属包覆的层压板，一种多层板和多层电路板。

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。