粉末冶金

They are: materials which cannot be easily made any other way, for example, porous bears and filters, metallic friction materials, abrasive tools, electric lamp filament s

粉末冶金主要用来生产两大类产品，它们是：用其他方法不易制造的产品，如多孔轴承和过滤器，金属摩擦材料，研磨工具，电灯丝

The basic requirements and characters of powder metallurgy friction material for airplane were reviewed, and the selection of the friction material for Boeing-737 airplane was studied by weighted analysis.

综述了飞机用粉末冶金摩擦材料最基本的功能要求和特点，并采用加权分析对Boeing-737飞机用摩擦材料的选择进行了研究。

The heat fatigue of the coat of supporting steel back of the powder metalurgical friction material and rotator material was studied in this article.

研究了粉末冶金摩擦材料及对偶材料支承钢背镀层的热疲劳行为。

By process testing, we discovered the optimal rigidity matching value of friction 30CrSiMoVA Steel with the powder metallurgy material, and put forward an new heat treatment process.

通过工艺试验，找到了30CrSiMoVA钢与某粉末冶金材料相互磨擦时的最佳匹配硬度值，提出了一种热处理新工艺。

The emphasis of this thesis is the study on the effect and mechanism of mechanical and friction performance caused by rare earth elements in iron based powder metallurgical friction material.

稀土在铁基粉末冶金摩阻材料中作用机理的研究稀土，铁基

Main clutch: normally opened, multi-plate, powder metallurgy friction plate and hydraulic booster control.

主离合器为常开式、多片湿式粉末冶金摩擦片、液压助力操纵。

Careful research on friction materials has been done around the word for many years and the present system include materials mainly consist of polymer matrix, powder metallurgy friction materials and C/C friction materials.

多年来，国内外对摩擦材料进行了广泛的研究，主要形成了有机合成摩擦材料、粉末冶金摩擦材料和碳/碳复合摩擦材料为主的体系。

Laser surface modification of copper-based powder metallurgy friction materials.

铜基粉末冶金摩擦材料激光表面改性处理。

Keywords Cu-based friction materials;nano-SiO2;friction and wear;powder metallurgy

铜基摩擦材料；纳米SiO2；摩擦磨损；粉末冶金

The dynamic behavior and deformation properties of Cu-matrix powder metallurgy friction material under impact loading with confined pressure and non- confined pressure is investigated.

研究铜基粉末冶金摩擦材料在无围压和加围压条件下的动态力学特性及其形变特征。

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。