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Compactibility of mixed powders composed of Al_2O_3 powder and Cu powder at room temperature has been investigated.

本文研究了由Al2O3粉和Cu粉组成的混合粉末体系的室温压制性能。

Al and SiC powders were chosen as active filler and inert filler, respectively, for the fabrication of preceramic-derived multi-phased ceramics, using polycarbosilane as preceramic precursor.

采用微米级Al粉作为活性填料， SiC微粉作为惰性填料，聚碳硅烷作为陶瓷前驱体制备SiC基复相陶瓷。

Al and SiC powders were chosen as active filler and inert filler,respectively,for the fab- rication of preceramic-derived multi-phased ceramics,using polycarbosilane as preceramic precursor.

采用微米级Al粉作为活性填料，SiC微粉作为惰性填料，聚碳硅烷作为陶瓷前驱体制备SiC基复相陶瓷。

The results show that spherical BaHfO3Ce nano-powders are synthesized only at 900 ℃ for 2 h and the average diameter is about 15 nm with ammonia as precipitant.

结果表明：以氨水做沉淀剂在900 ℃煅烧2 h合成的BaHfO3Ce粉体形貌近似球形，平均粒径约15 nm。

Single phase La2Zr2O7 powders were synthesized by co-precipitation method using ammonia and oxalate ammonium as precipitant agent, respectively.

分别采用氨水和草酸铵作沉淀剂，通过化学共沉淀法制备了单相La2Zr2O7粉末。

Its principal use has been for surface sterilization of powders as a precaution against potential microbiological contamination of the sterile powder during aseptic handling.

乙撑氧也被用在无菌粉末的处理上，它的主要用途是对原粉表面灭菌，在无菌处理期间防止对无菌粉末可能造成的微生物污染。

Following are summary of our works:(1)The powders of LaCr_(0.9)Co_(0.1)O_3, LaCr_(0.9)Fe_(0.1)O_3, LaCr_(0.9)Ni_(0.1)O_3, LaCr_(0.95)Sn_(0.05)O_3 and LaCr_(1-x)Ti_xO_3(x=0.0-0.3) were single perovskite phase with orthorhombic structure. The gas-sensing properties of their thick film sensors were tested in the acetone, ethanol, normal propyl alcohol, carbinol and formaldehyde organic gases. The sensitivity of the sensors can not be enhanced effectively by doping Co、Fe、Ni、Sn elements in B-site of LaCrO_3. Ti dopant with proper concentration can greatly improve the gas-sensing properties, which make the sensor display higher sensitivity and quicker response-recovery characteristics.

所得结果摘要如下：(1)LaCr_(0.9)Co_(0.1)O_3、LaCr_(0.9)Fe_(0.1)O_3、LaCr_(0.9)Ni_(0.1)O_3、LaCr_(0.95)Sn_(0.05)O_3和LaCr_(1-x)Ti_xO(来源：ABfd1dC论文网www.abclunwen.com)_3(x=0.0-0.3)粉体为正交单相钙钛矿结构，其厚膜型气敏元件在350℃时对丙酮、乙醇、正丙醇、甲醇、甲醛等有机气体的气敏性能测试表明：0.1mol Co、Fe、Ni和0.05mol Sn元素在LaCrO_3的B位进行掺杂后，不能有效提高材料对以上测试气体的气敏性能；而Ti元素的适量掺杂可以极大地改善LaCrO_3的气敏性能，使之显示出对丙酮气体的高灵敏度和快速响应恢复能力。

To get actual pumpernickel, forget the powders, coffee and chocolate ...

得到实际庞珀尼克尔，忘记了粉末，

Mg and Fe element powders were reactively ball milled under H2 atmosphere in a planetary ball mill to synthesize Mg2FeH6 hydrogen storage materials.

以Mg和Fe元素粉末为原料，在双行星式球磨机的氢气气氛中反应球磨，合成Mg2FeH6储氢材料。

Recently the metallic magnetic powders have been recognized to be better materials for high density magnetic recording.

目前，制造高密度磁带的磁记录材料——金属磁粉，已被认为是较理想的材料。

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