查询词典 powder metallurgy

Crystalline and amorphous nano-Al_2O_3 powder were synthesized by room-temperature hydrolysis method and direct oxidic method respectively, and nano-SnO_2 powder was produced by sol-gel technology. Their microstructure features and growth behavior of crystal grain were studied in detail, and corresponding model and theory were put forward to explain them.

采用室温水解法和直接氧化法分别获得了晶态和非晶态纳米Al_2O_3粉，采用溶胶-凝胶法制备了纳米SnO_2微粉，研究了它们的微结构特征与晶粒生长行为，并提出了相应的模型与理论去解释。

Its composition includes the following ingredients: 18-22 portions of paligorskite, 34-37 portions of river sand, 12-13 portions of oyster shell powder, 9-11 portions of bone powder, 4-6 portions of edible salt, 10-11 portions of Chinese medicinal materials, 2-3 portions of trace element, 2-3 portions of amino acid and 2-3 portions of vitamin.

本发明以层链状硅酸盐粘土矿物坡缕石和中草药、微量元素、氨基酸、维生素等为原料，经充分混合均匀配制而成；重量组分如下：坡缕石18～22份、河砂34～37份、贝壳粉12～13份、骨粉9～11份、食盐4～6份、中草药10～11份、微量元素2～3份、氨基酸2～3份、维生素2～3份。

Its main products and capacity are: Ammonium Paratungstate annual output 6000 tons; Tungsten Oxide annual output 5000 tons; Tungsten Powder annual output 2000 tons; Tungsten Carbide Powder annual output 2000 tons.

主要产品及能力：仲钨酸铵6000吨/年；氧化钨5000吨/年；金属钨粉2000吨/年；碳化钨粉2000吨/年。

Ammonium paratungstate has a great effect on the properties of the blue tungsten oxide , and blue tungsten oxide has a great effect on tungsten and tungsten carbide powder also; The tungsten carbide powder of good quality can be made from APT or blue tungsten oxide treated by a special process.

仲钨酸铵对蓝钨性能影响较大，而蓝钨物理性能对钨粉和碳化钨粉的性能影响也较大，通过对APT煅烧前或煅烧后进行特殊处理优选蓝钨原料，可以制取优质碳化钨粉。

The invention relates to a paraxonic powder-feeding device based on the laser powder filling weld and relative power-feeding method, belonging to the laser material manufacture technique.

本发明涉及一种基于激光粉末填充焊接的旁轴送粉装置及送粉方法，属于激光材料加工技术领域。

It is found that the powder annealed at 800 ℃ shows a pure perovskite structure and the size of the powder is about 125~200 nm.

结果表明800℃退火处理的粉体样品呈单一的钙钛矿结构，晶粒大小在125~200 nm左右。

The drug of Xin xiebai powder can raise the content of SOD , at the same time reduce the content of the toxic oxygen free radicals and the injury by lipid peroxidate and lighten the lung damage by the oxidation effects of stress reaction.It confirms the security of Xin xiebai powder by acute toxic experiment.

能够提高机体 SOD 的含量，从而减轻毒性氧自由基的含量，降低机体内脂质过氧化，减轻氧化应激反应引起的肺损伤。

The correlation coefficient was 0.784 during liquid culture and extremly markedly correlation was identified during Plutella xylostella powder liquid culture but no correlation was found during Pieris rapae powder liquid cultu

在萨氏培养液中，两者相关系数为0.784；在小菜蛾虫尸粉培养液中，两者极显著正相关r一0.9763，F=61 。1 786，p

According to Chapter Chongyi source Tungsten Industry Co., Ltd. to provide the latest quotation, at present in the tungsten powder particles by preganglionic 220 ~ 224 Yuan / kg had risen to 232 ~ 237 yuan / kg; tungsten carbide powder particles in the 218 by preganglionic ~ 223 yuan / kg risen by 230 ~ 235 yuan / kg; tungsten oxide particles from preganglionic 160 ~ 163 Yuan / kg risen to 173 ~ 178 yuan / kg; APT is from before the 140 ~ 143 yuan / kg now risen to 154 ~ 159 yuan / kg.

据崇义章源钨业有限公司，提供最新报价，在由节前220224元/公斤钨粉颗粒目前已上升至232237元/公斤，在218钨碳化物粉末粒子由节前223元/公斤上升了230235元/公斤，从节前氧化钨粒子160163元/公斤上升到173178元/公斤；亚太从之前的140143元/公斤上升到现在154159元/公斤。

The precursor powder materials were sintered by pressureless treatment at 600℃ and 900℃, respectively. XRD results show that the powder is in the form of a single cubic fluorite structure when sintered at 600℃.

在600℃和900℃下分别对初始粉体进行无压煅烧，XRD表明，在600℃时形成了单一的立方萤石结构。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。