西南交通大学机械专业英语考点大全.docVIP

单词15’’ ferrous metals 黑色金属 nonferrous metals 有色金属 hardness n.硬度 foundry n.铸造（车间，厂） copper-base alloys 铜基合金 press n.压力机v.压锻 sizing operations 精锻工艺；精加工 furnace n.（熔，炼，高）炉 pyrometer n.高温计 solder v.软钎焊 melting point 熔点 electrode n.电（焊）极 machining n.切削加工 grinding n.磨削加工 annealing n.退火 quench n.v.淬火 tempering n.回火 modulus of elasticity 弹性模量 low carbon steel 低碳钢 high-speed steel 高碳钢 mesh v.啮合；配合 right-hand threads 右旋螺纹 pitch n.节[螺，齿]距 lead n.导程 rack n.齿条；导轨 follower n.从动件 slippage n.滑动；打滑 critical n.临界点adj.批评的 screw n.螺钉 stud n.螺栓 nut n.螺母n.坚果；核心 connecting rod 连杆 coupling n.联轴器 lubricant n.润滑剂，a.润滑的 leadscrew 导杆；丝杆 kinetic energy 动能 friction n.摩擦（力） hinge n.铰链 washer n垫圈[片] spacer n.垫圈，垫片 finish n.表面粗糙度 twist drills 麻花钻 rake angle 前角 swarf n.金属屑 built-up-edge 切削瘤 tolerance n.公差；容差 torque n.扭矩 chip n.切屑 roughing operation 粗加工 finishing operation 精加工 inertia n.惯性（物）；惯量 linkage n.连杆（组、机构）  简答 轴承种类： sliding-contact bearings 滑动轴承 rolling-contact bearings 滚动轴承 angular-contact bearings 角接触球轴承 groove-ball bearings 深沟球轴承 CAD: Computer-aided design CAM: Computer-aided manufacturing CNC: Computerised Numerical Control DNC: Direct Numerical Control 两类金属： simple metals alloys 铸造工艺步骤：foundry processes Foundry processes consist of ①making molds,②preparing and melting the metal,③pouring the metal into the molds,and ④cleaning the castings. 软钎焊工艺：soldering processes Soldering is the process of joining two metals by a third metal to be applied in the molten（adj.融化的） state. 软焊是要用溶融状态的第三种金属来使两件金属连接在一起的工艺。 材料力学特性定义：The define of materials mechanical properties Some important mechanical properties of materials are: Strength 强度(in tension, compression, shear and bending) Stiffness 刚度 Ductillty 延展性 Impact strength 冲击强度 hardness 硬度 Toughness 韧度 齿轮种类：gears Spur Gear 直齿轮 Helical Gear 斜齿轮 straight bevel 直齿锥齿轮 皮带传动是否精确？为什么 Smooth flat belts and V belts depend on friction on the pulleys and some slippage is inherent in their