conical roller Bearings With rolling Contact In bearings with rolling contact, the shaft is needle idirectly or indirectly supported by rolling elements, cylindrical such as balls, cylindrical or conical rollers, orroller needles (i.e, ylindrical rollers with a high

There are two basic methods of generating process manufacturing gear teeth,the generating process and the forming forming process process. When a gear tooth is generated, the workpiece and the grinding cutting or grinding tool are in continuous mesh and the tooth form is mesh

Product quality is al ways a matter of prime importance in manufacturing. It should be given parameter the highest priority in process planning. The quality of a machined part can be expressed in coordination geometrical parameters( dimension

用原子力显微技术（AFM）观测复合人工滑液在材料表面形成的吸附膜的表面形貌图像，吸附膜上清晰地显示有大量的椭球形分子．该吸附膜的形成可能是复合人工滑液对人工关节材料润滑性能显著提高的一个重要因素．

The Lathe And Its Construction A lathe is a machine tool used primarily for producing surfaces of revolution and flat edges. Based on their purpose, construction, number of tools that can simultaneously be mounted and degree of automation, lathes-or, more accurately, lathe-type machine tools-can be classified as follows:

5.1 基本概念 5.2 砂型铸造和特种铸造 5.3 金属的铸造性能和结构工艺性 5.4 常用合金的铸造

§1铁碳合金的相结构与性能 §2铁碳合金相图 §3碳钢

《工程材料与成形技术》课程授课教案（讲义）第3章 钢的热处理

《工程材料与成形技术》课程授课教案（讲义）第2章 金属的结晶与二元合金相图

合金钢 一、概述及合金钢的分类、牌号 二、合金结构钢、工具钢、特殊性能钢