铝合金

The effects of retrogression time on the mechanical properties and intergranular corrosion resistance of 7050 aluminum alloy were investigated by means of hardness and electrical conductivity test, optical microscopy and transmission electron microcopy.

采用硬度、电导率测试、金相及透射电镜观察等手段，研究了回归时间对7050铝合金力学和晶间腐蚀性能的影响。

］ In order to study the effect of machining processes on the surface condition of fastening holes drilled on 7075 aluminum alloy for aircraft assembly, the surface microphotograph and surface layers microstructure produced by the five kinds of drilling processes were observed and analyzed by means of SEM and optical microscope.

摘 要］为研究加工工艺对7075-T7351铝合金飞机装配紧固孔表面质量的影响，通过扫描电子显微镜和光学显微镜，分别对5种不同制孔工艺所产生的表面微观形貌和表层组织变化进行了观察和分析。

The mechanism of microscopical roughness forming on the aluminiumalloy casting surfaces has been studied by plaster investment casting.

本文通过熔模石膏型铸造法研究了铝合金铸造表面微观粗糙度的形成机理。

These CMR's are for analysis of mild low alloy steel by Chemical methods.

此类标样用于铸造铝合金的光谱分析和化学分析。

By the experiment of high-speed milling aluminium alloy with carbide end milling cutter,the method of helical chip formation was researched.

通过硬质合金立铣刀高速加工铝合金的铣削试验，对螺旋状切屑的成形进行了研究。

In machining the surfaces of alu minium alloy parts a re corroded by emulsion frequently.

文摘：介绍了应用复合缓蚀剂的协合效应，来防止铝合金件在机械加工中，因乳化液的腐蚀，使工件表面发黑的现象。

Hampered by sabotage and deliberate technical misguidance from Wilson, as well as delays in metallurgical research which didn't result in an acceptable alloy of magnesium and aluminum until 1944, the Germans could only continue to harass allied pilots with the "fireballs", pilotless craft developed and used since 1942 which emitted electrical fields that interfered with the operation of aviation engines.

显然在战争进行比科技研发更快的情况下﹐因威尔逊的误导及破坏﹐以及冶金研究的拖延，始终没有另人满意的镁铝合金，直到1944年，德国人只能用1942年发明的﹐"火球"无人驾驶飞行器﹐用产生的磁场来骚扰盟军飞行员。

In such cases, the modulus of elasticity, not the tensile properties, will govern the design.

强度大或小的铝合金模量是大约相同的（其数值大约为钢弹性模量的三分之一）。

Some bicycles made abroad have its rim, chain wheel, frame, brace, front and back shafts, mudguard made of aluminium alloys.

国外生产的部分自行车，其车圈、链轮、车架、曲柄、前后轴、挡泥板等零件都采用铝合金制造。

The design approach for aluminium alloy grid structures and the design results of Yiwu Natatorium are presented.

义乌游泳馆屋盖采用大跨度倒置式铝合金格构式结构在我国工程应用中尚属首次。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。