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In this paper,the forming mechanism and affecting favtor of bulk metallic glasses is systematically discussed from the aspects of thermodynamic, kinetic and microstructure . Thermodynamic factors which favor the amorphization of alloys analyzed, the glass forming range of ternary alloys system was proposed by using Miedema theory, Toop model and considering the influence of free energy of pure metals at different temperature. The approach was applied to predict the composition range of amorphous Mg-Cu-La alloys. Several methods(such as three empirical criterions ,binary alloys phase diagram , Miedema theory and Toop mode) were used to design a series of Mg65Cu25La10 、Mg68Cu17La15 and Mg57Cu23La20 alloys, These bulk amorphous alloys with maximum diameter thickness reaching to 1mm were prepared by means of graphite-molding casting though the raw materials are of a low purity by conventional casting processes at a low cooling rate.

本文从合金的热力学、动力学及结构形成条件方面系统的讨论了Mg 基大块非晶的形成机制及影响因素，并从非晶形成的热力学观点出发，综合应用Miedema理论和Toop 模型，并考虑纯金属在不同温度下的自由能，在此基础上提出了一种定量预测三元非晶合金形成范围的方法，用该方法计算Mg-Cu-La 三元合金系的非晶形成范围，应用多项技术(三经验原则、二元合金相图及Miedema 理论和Toop模型)设计了Mg65Cu25La10 、Mg68Cu17La15 和Mg57Cu23La20非晶合金。

Casting for denture restorative trame needs a high quality of equipment,the complex materials,a degree of difficult technique and the useful art.Thus it has some difficulty of casting sharpeless and drawback s' caused at work.The mutual relations

文摘：为解决铸造牙科修复支架过程中因各种原因造成铸件变形或缺陷，着重探讨了因铸造合金的性能与浇注系统对铸件的影响，并就解决铸造变形与缺陷提出了相关解决办法。

Solid minerals separation processing machine, casting emery, metal-casting shaped boxes, model base board, force piston, plastic or rubber, injected plug and pressed plug, transfer shaft, crank and other transformation sections, bearing support, teeth pulley and other gearing speed variator, ball bearing, flywheel, chain wheel including pulley block.

固体矿物分选等处理机器，铸造砂。金属铸造用型箱，型模底板，阳模，塑胶或橡胶用注模或压模。传动轴及曲柄等传动部件，轴承座，齿轮及其它变速，传动装置，滚珠，飞轮及滑轮，包括滑轮组。

Using the commercial software pack of CFD, simulation of casting process from a 40t ladle is carried out and the law of hot metal flow in the ladle in stand still as well as in the ladle in casting is determined.

利用CFD商业软件，对建立在正交网格上的40t钢包浇铸过程进行了数值模拟，模拟结果得出了钢包静置和钢包浇铸的钢水流动规律。

The solid-liquid mixed casting of Al-Mn allays was studied by adding same alloys powder, the structure and performance of the material prepared by solid-liquid mixed casting was analyzed.

通过加入同种成分粉末，研究了Al-Mn合金的固液混合铸造工艺，初步探索固液混合铸造后的金相组织及力学性能变化。

The solid-liquid mixed casting of Al-Mn allays was studied by adding same alloys powder, the structure and performance of the material prepared by solid-liquid mixed casting was analyzed.

采用固液混合铸造的室温力学性能σb=130MPa，σ0.2=80MPa，δ=1.2%；优于传统铸造和半固态铸造合金，使难以应用的高锰铝合金有了应用可能。

The experiment of hot dip aluminizing had been carried out in order to study the interaction between die casting die and aluminum alloy and the effect of Si on soldering tendency between die and aluminum alloy casting.

为了研究压铸模与铝合金的相互作用，探讨Si对压铸模与铝铸件焊合倾向性的影响，进行了热浸铝试验。

It can be made by blowing, extrusion casting, solution casting, or by calendaring.

可通过吹膜，挤压铸造，溶液铸造或轧光工艺制造。

It is higher demand of slip casting engineering of imperious curtain of municipal refuse landfill , because its coarse grain and higher sweating rate when its concretion and its antacial poor stability of cement cumulates, its difficult to meet the design specification of antiseepage by the onefold cement slip casting.

城市垃圾卫生填埋场对防渗帷幕注浆的要求较高，单纯的水泥注浆，由于水泥颗粒较粗、水泥浆液凝固时的析水率较高、水泥固结体抗酸稳定性较差，很难满足设计对防渗的要求。采用粘土水泥固化浆液相关性能均能满足垃圾填埋场防渗帷幕的要求。

However, at present, the majority of aluminum alloy casting has been applied online degassing and filtering device, casting temperature is still above the concept is not quite complete and correct.

但是，目前，铝合金铸件大部分已应用于在线脱气和过滤装置，铸造温度仍高于这一概念是不够全面和正确的。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了