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Three hydroxyapatite powders (HAP1, HAP2 and HAP3) were prepared by hydrolyzation process using brushite, precipitation method using calcium hydroxide and ammonium phosphate and neutralization method using calcium hydroxide and phosphoric acid, respectively. Hydroxyapatite/collagen composite was prepared by in situ precipitation method using calcium hydroxide, phosphoric acid and bovine collagen which was extracted from the fresh bovine tendons.

本研究以相关钙盐、磷酸盐为原料，分别用二水合磷酸氢钙水解法、氢氧化钙-磷酸氢二铵沉淀法和氢氧化钙-磷酸酸碱中和工艺制备了三种羟基磷灰石粉体，分别为HAP1、HAP2和HAP3；并以氢氧化钙、磷酸和从牛腱中提取的胶原为原料通过原位沉淀制备了羟基磷灰石/胶原复合材料。

At last the gel was firing at 200 and calcined at 750 to get the HAP powders.

然后在200℃燃烧，最后经750℃煅烧得到纳米HAP粉末。

Our expertise in the field of filling and capping liquids and powders is now recognized worldwide

我们在对液体和粉末的填装和封盖领域的专长已经被全世界所认可。

Nanocrystalline CeO 2 were prepared by sol gel method using cerous nitrate and citric acid. The powders were analyzed by XRD. It was showed that the synthesized CeO 2 was cubic in structure and CeO 2 particles were basically spherical in shape.

摘 要：以硝酸铈和柠檬酸为原料，采用溶胶凝胶法制备了纳米CeO2 对反应温度、金属离子与配体的摩尔比、凝胶烘干温度、焙烧温度等制备条件对产物的影响进行了研究。

The magnetic microbeads with 1μm diameter are synthesized by ultrafine γ-Fe2o3, cinnamene, diethylene benzene monocase combined suspendd polymerize and ultrasonic technology. The magnetic microbeads are composed of ultrafine magnetic powders, polymer and single-antibody.

采用超细r-Fe2O3粉对界面进行处理，利用苯乙烯、二乙烯基苯单体，采用悬浮聚合法和超声波技术，合成粒径为1μm左右的磁性微珠，该磁性微珠由超细磁粉、高分子材料和单抗功能基团组成。

The magnetic microbeads with 1um diameter were synthesized by ultrafined r-Fe2O3, cinnamene, diethylene benzene moncase combined suspend polymerize and ultrasonic technology. The magnetic are composed of ultrafine magnetic powders, polymer and single-antibody.

采用超细r-Fe2O3粉界表面进行处理，利用苯乙烯、二乙烯基苯单体，采用悬浮聚合法和超声波技术，可以合成粒径为1um左右的磁性微珠，该磁性微珠由超细磁粉、高分子材料和单抗功能基团组成。

In this paper, the nanometer Co-Cu-B alloy powders had been prepared in solution of mixing cupric and cobaltous sulphate, by liquid reduction process, on the condition of pure water and the ethanol-water system, using KBH4 as a reducer, PVP as a dispersant.

本研究采用液相还原法，以KBH4作还原剂，PVP作分散剂，分别在二价钴、铜硫酸盐的纯水体系和乙醇-水体系下合成了纳米Co-Cu-B合金粉末。

nikel powder ; WC-Ni mixture powders ; Specific coercitive fore H CS

文献[3] 指出，以细颗粒WC粉为原料可基本消除上述组织缺陷，说明提高WC—Ni混合料的混合均匀化程度是改善WC—Ni系合金组织结构因而是提高合金性

The composite powders consisted of Si, Ni, Ag and a series of Si-Ni alloys. The SEM and TEM results showed that the composite powder consisted of clusters with space and network structures. The composite electrode exhibited higher reversible capacity and the initial columbic efficiency was up to 87 %, which was much higher than that of the pure Si electrode.

XRD结果表明，复合材料中含有Si、Ni、Ag以及一系列Si-Ni合金相；SEM及TEM结果表明，复合材料呈现网格状的团簇结构，而且有一定的层状厚度；电化学测试显示，该材料电极具有较高的首次嵌/脱锂容量，首次效率达87%，较纯硅粉电极有了很大的提高。

The stable transparent sol of SrAl 2O 4 was successfully prepared for the first time by using cheap inorganic materials as precursors. The uniform and crackless photoluminescent thin films and the needle like nano powders were synthesized at a rather low temperature in reduced atmosphere.

研究了溶胶-凝胶工艺制备SrAl2O4∶Eu2+， Dy3+高效长余辉发光薄膜及粉体的工艺条件，以无机盐为原料，成功制备了均一、稳定、透明的SrAl2O4溶胶，并在较低温度下制备了均匀、无裂纹的发光薄膜和颗粒均匀的针状纳米发光粉体。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。