By contrast, the complex gold alloy that has duped jewellers in Hong Kong earlier this year is far more difficult to detect. 相比之下,今年早些时候骗倒香港珠宝商的复杂黄金合金,检测难度则要大得多。
But the latest involves pure gold plated on a complex alloy whose colour, density, and hardness bears a remarkable similarity to the real thing. 但最新骗局中的假黄金,却是一种镀上了一层纯金的复杂合金,这种合金不管是颜色、密度还是硬度,都和真金极其相似。
Hot forming process optimization of a complex titanium alloy part with numerical simulation method 复杂形状钛合金热成形零件工艺仿真及参数优化研究
Structure analysis of complex alloy phases in as-solidified microstructures of Al-Pd-Fe alloy Al-Pd-Fe合金凝固组织中复杂合金相的结构分析
In one case, executives discovered a pure gold coating that masked a complex alloy with similar properties to gold. 在一起事件中,管理者发现,犯罪分子在与黄金属性相似的合金外面包裹了一层纯金。
In one case, executives discovered a coating advertised as pure gold that masked a complex alloy, which included rare metals such as osmium, iridium, ruthenium and rhodium. 在一个案例中,业内高管发现一种号称纯金的涂层其实是一种复杂的合金,含有锇、铱、钌、铑等稀有金属。
Making the guide roller for high-speed wire of vacuum sintered complex nickel alloy and using the lathe with PCBN tool instead of the grinding machine, and increasing service life. 采用真空熔结镍基合金复合材料制造商线导卫辊,并用PCBN刀具实现以车代磨工艺,提高导卫辊的使用寿命。
The investment casting method another advantage is that it can casting various alloy castings, especially the complex of high temperature alloy castings can be casting. 熔模铸造方法的另一优点是,它可以铸造各种合金的复杂的铸件,特别可以铸造高温合金铸件。
The effect of ferro-silico-barium and its rare earth complex alloy on mechanical properties, castability and metallographic structure of cast iron containing Pb 、 As and Sn have been studied. 研究了含钡硅铁及其稀土复合合金对含铅、砷、锡铸铁机械性能、铸造性能和金相组织的影响。
Test course and result of smelting W-Mo-Fe complex alloy with concentrates as raw material and using alumino-silico thermic process are described. The effect of main factors to recovery of tungsten and molybdenum are also discussed. 叙述了以精矿为原料采用铝硅热还原法冶炼钨钼铁复合合金的试验过程和结果,讨论了影响钨、钼元素回收率的主要因素。
The strap material for tube is three-layer complex aluminum alloy, the outside Al-Si brazing material, the middle Al-Mn core material, the inner Al-Zn resistant corrosion material. 管材所用铝合金带料为三层复合材料,外层为Al-Si钎料层,中间为Al-Mn芯材,内层为Al-Zn防腐层。
Study of Nano Atom Clusters and Defect Structures in Complex Metallic Alloy Phases 复杂合金相中的纳米原子团及缺陷结构的研究
Based on the characteristics of rail for heavy loads and high speed railway, to develop high strength and toughness, middle carbon& complex alloy steel for heavy rail is suggested. 根据重载高速铁路钢轨的特点,提出开发中碳多元合金化的高强度高韧性重轨钢。
A new complex deoxidizer Ca-Si-Ba-Al-RE alloy ( CSBA) was developed for improving the ef-fect of calcium on the inclusion control. 为改善钙控制钢中非金属夹杂物的作用,研制成Ca-Si-Ba-Al-Re新型复合脱氧剂(即CSBA合金)。
The composition of new complex aluminum-bronze alloy containing Mn was determined in this paper. The effect of microalloying both V and B and the heat treatment on its hardness and mechanical properties of aluminum-bronze alloy were studied. 试验确定了新型多元复杂含锰铝青铜防爆合金的化学成分,并研究了B与V微合金化及热处理对该合金硬度及力学性能的影响。
Its working principle and affecting factors were analyzed, and the filling mould physical and mathematical models were built. The advantages were also shown in casting high precision and complex magnesium alloy parts. 建立了其在充型过程中的物理模型与数学模型,分析了其铸造工艺的特点及影响因素,以及在铸造高精度、复杂镁合金铸件方面的优势。
The microstructure, hot extruded property and mechanical property of a new type wrought aluminium alloy produced by adding several alloy elements to direct electrolytic product Al Si Ti complex alloy have been examined. 利用河南铝矿石直接电解的Al-Si-Ti多元合金,系统研究了添加少量合金元素后的变形铝硅钛多元合金的显微组织、挤压性能和力学性能。
Effect of Hot Deformation on Structure and Properties of the Wear Resistant Complex Alloy Cast Iron 热变形对多元合金耐磨铸铁组织和性能的影响
Development of W-Mo-Fe complex alloy 钨钼铁复合合金的研制
Strengthening functions of MC phase in complex low alloy creep-resistant steel containing boron MC相在含硼多元低合金热强钢中的强化功能
High Hardness and Wear-resistant Complex Alloy of Room Temperature Surfacing 冷堆焊高硬度耐磨复合合金
Inoculating the cast iron containing lead, complex alloy can improve effectively the structure and properties of the cast iron. 用含锆硅铁以及它的复合合金对含铅、砷、锡等杂质元素的铸铁进行孕育处理,可以有效地改善铸铁的组织和性能。
ISO Thermal-Precision Forging Process for Complex Titanium Alloy Components and Its Application 钛合金复杂结构件等温精锻成形工艺与应用
Traditional crystallography has been unable to describe the complex alloy phases. 传统的晶体学描述方法已无法满足对复杂合金相的描述。
The copper based matrix of complex alloy and hot pressing process were introduced. 钻头胎体采用高性能的多元合金铜基结合剂,经热压烧结制成。
In microstructure simulation, the nucleation adopts the continuous nucleation model based on Gaussian distribution, and the growth adopt the extended KGT model which fit complex alloy expanded from binary alloy. 在微观计算中,形核计算采用了基于高斯分布的连续形核模型,生长计算采用了扩展的KGT模型,使其适用范围由二元合金扩展至多元合金。
Relied on scientific research item, based on CAD/ CAE/ CAM technology, using the method combined with high speed machining theory, numeric simulation, experiment validate, this paper researches on high speed machining technology of complex thin-walled aluminum alloy workpieces. 论文依托某科研项目,基于CAD/CAE/CAM技术,采用高速加工理论分析、数值模拟、实验验证相结合的方法,对铝合金复杂薄壁构件的高速加工工艺进行了研究。
This parameters maded for the further using to prepare more complex alloy solder powder. 在此实验基础上进一步用等离子法制备比较复杂的合金焊料粉体。
In the production of complex aluminum alloy hollow profiles, it is not easy to control the metal flow velocity by just modifying the structure and size of the die bearing. 在生产形状较为复杂的铝合金空心型材时,仅仅依靠修改工作带结构有时并不能很好的控制金属流动速度,往往要经过多次的试模-修模的重复过程。
The production development of the large and complex section Aluminum alloy profile with high precision 、 high surface quality and high mechanical properties is restrict by the level of the online quenching process. 高精度、高表面质量、高机械性能的大型复杂截面铝型材生产开发受到了在线淬火工艺技术水平的制约。