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A preparation method of monodisperse high crystallinity copper powder is provided, which relates to a method for preparing copper powder used in conductive paste by using cupreous compound, in particular to a preparation method of the copper powder used in the conductive paste that is applicable to ceramic electronic components with a plurality of layers.

一种单分散高结晶度铜粉的制备方法，涉及用铜的化合物制备导电浆料用铜粉的方法，特别是涉及适用于多层陶瓷电子元件的导电浆料用铜粉的制备方法。

This artice reviews the production technology,condition and performance of a naturally environmental protection macromolecule water-sol ubility glue powder,which is compounded by dragon glue,inorganic gel,meliorative plant fibre powder and PVA-9 powder etc.

概述了由龙胶，无机凝胶及改性植物纤维粉，PVA—9 粉等材料复合而成的一种天然环保分子水溶性胶粉的生产工艺，性能，并着重介绍其在建材领域中的应用，揭示了该技术项目正成为当今人们投资的热点。

The high cost of powder flexible putty results in the high cost of the admixed latex powder that contains unbonding talcum powder and powdered whiting, besides fulfilling the performance of powder flexible putty requires high content of latex p.

粉状柔性腻子产品成本较高的原因是乳胶粉的成本高，除了直接成本外，乳胶粉中还含有一定量无胶结性能的滑石粉、重质碳酸钙等，使之用量必须很高才能满足性能需要；适合柔性腻子的产品类型是由液料和粉料组成的双组分腻子，该类腻子在满足JG158—2004标准要求的情况下，具有合理的成本，完全能够为市场接受。

In the original production of mica only on the basis of can provide you with sericite, vermiculite powder, superfine superscalar, quartz powder, silica powder, such as series of mineral powder and natural sand gravel mechanism, non-metallic minerals such as quartz sand, the company adhere to the "strict management, quality first "The production and management principles, follow the" integrity-based, service-oriented "principle, has been praised many partners, but also for enterprise development has laid a solid foundation.

在原来只能生产云母粉的基础上，可同时为您提供绢云母，蛭石粉，超细超纯，石英粉，硅微粉等系列矿物粉体及天然采砂机制卵石，石英砂等非金属矿产品，公司奉行"严格管理、质量第一"的生产经营方针，遵循"诚信为本、服务至上"的原则，得到了众多合作伙伴的好评，同时也为企业发展打下了牢固的基础。

Emphasis was put on the conditions for extraction, the qualities and the components of gingerin, the conditions for yeast autolysis, and the qualities of gingerin microcapsule.

结果表明：(1)超临界CO_2萃取姜油的适宜条件为：选取种植后约9个月采收的鲜姜，低温烘干、粉粹，姜粉的含水量约10％，粉粹度在50～60目范围，萃取温度45℃，压力28MPa，时间150min，CO_2流量2.5ml／min，分离温度40℃，压力7.0MPa，此条件下姜油的萃取率高达4.40％。

In the dehydrogenation process of HD process, the temperature set at 580℃ and pressure set at 100Pa is a perfect parameter, it can make the magnet to have high magnetic performance. In the HDDR process experiment, the paper contrast four HDDR process such as C-HDDR V-HDDR V-HD-S-DR and d-HDDR by the anisotropy and magnetic performance of ternary NdFeB magnetic material. The results show that adjusting the parameter of the d-HDDR process can make the anisotropy and magnetic performance of ternary NdFeB magnetic powders to catch up with the hexahydric NdFeBCoZrGa magnetic powders. At the end the paper discusses the betterment of the equipment which produces ternary NdFeB magnetic with the d-HDDR process.

和580℃的脱氢温度相搭配的脱氢气压选择在100Pa左右是理想的工艺参数，这样的搭配使得最终烧结磁体综合磁性能优异；在HDDR制粉工艺实验中，本文对比了C-HDDR、V-HDDR、V-HD-S-DR和d-HDDR四种HDDR工艺对于三元NdFeB合金各向异性和磁性能的影响，得出结论：通过发展d-HDDR工艺，调整工艺参数和控制水平，可以使三元NdFeB合金磁粉的性能达到或接近六元NdFeBCoZrGa合金磁粉的水平，在文章末尾，还对配合使用d-HDDR工艺设备的改造进行了分析。

Comparing the magnetic properties of sintered magnets from HD powders and the degassed powders, it is found that the sintered magnet from HD powders gets excellent properties at a temperature of 20～30℃ lower than the magnet from the degassed powders.

例如，HD磁粉在10T的外磁场下所受到的转动力矩甚至还没有350℃脱氢磁粉在2T磁场下受到的力矩大，当磁粉的c轴与磁场方向成π/5（36°）角度时，两者受到的转动力矩分别为1.123×10〓Nm和1.202×10〓Nm。

The tantalum powder s by sodium reduction was heat-treated at 1350 ℃,1400 ℃ and 1450 ℃ respectively,then the three kinds of powders were deoxidized by Mg reduction at the same condition.

用钠还原氟钽酸钾得到的原粉分别在1350，1400，1450℃温度下进行热处理，得到的3种钽粉按照相同的条件进行镁还原脱氧处理，测试钽粉的化学成分、物理性能和电性能。

Comparison on structure of different specific volume of tantalum powder ;2. The tantalum powder s by sodium reduction was heat-treated at 1350 ℃,1400 ℃ and 1450 ℃ respectively,then the three kinds of powders were deoxidized by Mg reduction at the same condition.

用钠还原氟钽酸钾得到的原粉分别在1350，1400，1450℃温度下进行热处理，得到的3种钽粉按照相同的条件进行镁还原脱氧处理，测试钽粉的化学成分、物理性能和电性能。

The micro silver-coated copper powder with high temperature of oxidation resistance was prepared by chemistry substitutional and chemistry plating reaction.The surface topography,microstructure and oxidation resistance of the coated powder were characterized by SEM,XRD,TG and other methods.

为了提高铜粉的热稳定性，采用滴入化学镀法在铜粉末表面包覆一层金属银，用SEM、X射线衍射、粒度分布和热重分析表征了不同包覆厚度的镀银铜粉和原始铜粉的表面形貌、表面结构及抗氧化性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐