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Methods The drying soybean products were triturated. The powder samples were defated by the diethyl ether for 5 hours, and returned by the 80% methyl alcohol solutions with the liquid-solid ratio of 25:1 for 5 hours. The content of the total isoflavone in filtrate was determined by ultraviolet spectrophotometry.

将烘干的豆制品研成粉末,取粉末样品置于索氏抽提器中,用乙醚脱脂5h后,用80%的甲醇溶液以25:1的液固比热回流5h,用紫外分光光度法测定滤液总异黄酮含量。

Using high frequency calefaction equipment, MoSi2 ceramic powder and Ni-based self-fluxing powder blended in different proportion were cladded on W6Mo5Cr4V2 steel surface. And Ni-based alloy claddings with different MoSi2 content were obtained. The microstructure of cross-section of the claddings were analyzed; the microhardness and multi-physical parameters of the claddings were measured.

中文摘要:以W6Mo5Cr4V2高速钢为基体,在其表面利用MoSi2陶瓷粉末配制的Ni基自熔性合金粉末进行高频感应加热熔覆,制得不同MoSi2配比的Ni基合金覆层;对覆层横剖面进行微观组织分析和显微硬度测试,并对熔覆层的热物性参数进行测定及分析讨论。

The friction among magnetic powder grains and between the powders and die wall can be reduced by proper addition of lubricant,resulting in the improvement in orientation of magnets.

添加适量的润滑剂,可减小粉末间及粉末与模壁间的摩擦力,有利于提高磁体的取向度。

Powder metallurgy is a leading metal forming technology. It is a high new technology to make metal and other powder into mechanical components and products by pressing, fritting and other follow-up processes.

粉末冶金是一种先进的金属成型技术,是金属及其它粉末通过加工压制成型、烧结和必要的后续处理制成机械零部件和金属制品的高新技术。

In General, the powder particle size large light reflector wide, rendering it has strong metal and white coloring, powder particle size is small, light reflector is narrow, rendering the authenticity of metallic weak.

一般来说,粉末粒径大的光反射面宽,呈现金属色的成色性强,粉末粒径小,光反射面就窄,呈现金属色的成色性就弱。

This paper reviews recent developments in nickel-based powder superalloy used in aircraft turbines,and discusses the problems encountered in this research field in China.

综述了国内外飞机涡轮盘用镍基粉末高温合金的研究进展,分析了国内在粉末高温合金的研制过程中面临的问题及其解决途径。

By adding the additive into the non-self-fluxing copper powdered alloy, as a result, the powder shows self-fluxing and improves the oxygen-acetylene flame spraying.

在非自熔性铜合金粉末中加入特制的添加剂,使粉末具有自熔性,并改善了喷焊的工艺性及感应加热熔敷结合的工艺性。

The results showed that the wheat-straw powder had little reinforcing effect on NR,but had good filling effect;when the wheat-straw powder was modified by sodium hydroxide solution,silane coupling agent KH-550 or its solution,the physical properties of wheat-straw powder/NR composite were improved;the silane coupling agent KH-550 solution possessed better modifying effect.

结果表明,小麦秸秆粉末对NR无明显补强作用,但具有良好的填充作用;采用氢氧化钠溶液、硅烷偶联剂KH-550或其水溶液对小麦秸秆粉末进行表面处理,均可改善复合材料的物理性能,其中硅烷偶联剂KH-550水溶液的效果较好。

Rapidly solidified AZ91 magnesium alloy powders and the Mg-based composite material reinforced by SiC particles were produced by twin-roller atomization method and powder metallurgy, respectively. The microstructure, phase compositions and interface characterization between Mg matrix and reinforcing particles of AZ91/SiCp composite material were investigated.

摘 要:采用双辊雾化法制备快速凝固AZ91镁合金粉末,并用粉末冶金方法制备SiC颗粒增强的镁基复合材料棒材,研究AZ91/SiCp复合材料的微观组织、相组成及增强相与合金基体间的界面结构特点。

According to the complex degree,determined by their figurations and sizes,the classification of the metal powder compactions by steel's dies has been given.

文摘:按照其形状尺寸所确定的复杂程度,对金属粉末制件进行了分类;对各类制件的压制质量进行了分析;在此基础上,叙述并归纳了粉末件钢模压制的各种方法及其适用原则。

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Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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