查询词典 material point

ABSTRACT Title of Theme: Numerical Simulation and Controlling of Dimples on the Process of Multi-Point Forming for Sheet Metal Specialty: Material Processing Engineering Faculty Adviser: Prof. Cai Zhongyi Multi-point forming is a new means for sheet metal forming.

论文题目：板材多点成形中压痕的数值模拟及控制专业：材料加工工程指导老师：蔡中义教授多点成形（Multi-point forming，简称MPF）是一种全新的板材成形方式。

This invention discloses a preparation method for anti-corrosion rare earth magnet material characterizing that it takes the optimized grain-boundary phase design as the starting point on the basis of a dual alloy method to select Nd base alloy with high crystal forming ability as the assist alloy and reduces the temperature of the press mold blank in a quartz container to room temperature from over grain-boundary phase melting point with the water extraction way to get enough cooling rate and guarantee the non-grain-boundary phase, compared with the material of the same composition prepared by ordinary method, the weightlessness of this invented material reduces over 30% after testing the weightlessness of the material by laying it for 96 hours under 121deg.C, 2 atmosphere and 100% humid environment to show the advanced performance of anti-corrosion.

本发明公开了一种耐腐蚀稀土永磁材料的制备方法，其特征是它在双合金法制备工艺的基础上，以优化晶界相设计为出发点，选取具有较高非晶形成能力的Nd基合金为辅合金，并在烧结回火时将置于耐高温石英容器中的压型坯件，从晶界相熔点以上以水淬冷却的方式降温至室温，以达到足够的冷却速率，确保得到非晶晶界相，根据本发明制得的耐腐蚀稀土永磁材料，通过测量在121℃、2个大气压以及100％湿度环境下放置96小时后材料的失重情况，结果显示本发明得到的材料与常规方法制备的相同成分的稀土永磁材料相比失重减少了30％以上，充分证明其具备了更优越的耐腐蚀性能。可广泛应用于电子、汽车、计算机、电力、机械、能源、环保、国防、医疗器械等领域。

In terms of quantum mechanics, the principle of material point abstraction does not apply, in discussing problems of atoms. The shape can be neglected when built by micro object as wavelength of material wave.

量子力学在讨论原子问题时，质点抽象原则不适用，用物质波波长为微观客体建构的"形"不能忽略不计。

According to the tracing view of material point, a general numerical simulation algorithm is established in order to apply for refrigerant's various phase areas.

基于制冷剂流体质点追踪计算观点，建立了适用于制冷换热器各相区的通用数值仿真算法。

The bubble-point method and tridiagonal matrix method are proposed as solution of MESH equations(Material equation, phase Equilibrium equation, Summation equation, Heat equation), through which equations could be solved quickly and steadily, and the composing mole fraction at the top of tower and Key composition profiles and temperature of every stage are given.

提出采用三对角矩阵法和泡点法(BP，Bubble Point)相结合作为模型求解的解决方案，可快速稳定地求解复杂的MESH方程组，并给出塔顶液相组分组成和各塔板的关键组分分布及温度分布。

If he does, this may result in a form which is economic from the material point of view, but uneconomic visually because it requires a much greater effort of perception.

如果他这样做，从材料的观点来看这是一种经济的形式，但是实际上并不这样，因为从感知上来说它需要更大的努力。

When different materials mixed,the mixture will have a mixed melting point of mixture ,and the mixed melting point of mixture is different from the intersoluble solutions.we separate the intersoluble solutions by different melting piont of intersoluble solutions when separate temperature is flexible temperatureThese intersoluble solutions different in melting point, the method would make the high melting point material became solid while the low melting point material still be liquid by adopting cryogenic treatment with stirring so as to meet the requirement of purifying these two solutions.

这种分离方法的特点是利用两种互溶性物质具有不同的熔点，通过低温处理，并同时加以搅拌，震荡，使高熔点物质和低熔点物质形成固液混合体，再对固液混合体进行离心分离得到高熔点的固体和低熔点的液体，从而达到浓缩、提纯两种物质目的。

Co-firing characteristics of corn stalk and stone coal in different proportion were investigated by thermal gravimetric analysis. The results showed that corn stalk can improve the ignition and combustion of stone coal. The agglomeration experiments on corn stalk were made in a bench-scale bubbling fluidized bed with quartz sand as bed material and stone coal ash as additive. The results indicate that stone coal ash can inhibit agglomeration of bed material particles at temperature of 900℃. Agglomerate of blends was analyzed by means of scanning electron microscopy, energy-dispersive X-ray, and the bed materials were analyzed by means of X-ray fluorescence. Analysis showed that aluminum element and iron element in stone coal ash can react with alkali compounds and eutectics with low melting point, form a covering layer with high melting point on the surface of biomass and quart sand particles, thus inhibit the forming and transfer of low melting compounds.

以玉米秸秆与石煤按不同比例组成的混合物为研究对象，在TG-DTG热分析仪上进行了燃烧特性分析，结果表明玉米秸秆有利于石煤的着火和稳定燃烧，对石煤有一定的助燃作用；在小型鼓泡流化床实验装置上，以石英砂为床料、石煤灰为添加剂，进行了玉米秸秆成型燃料流化床燃烧的床料黏结实验，结果表明：石煤灰能够在生物质流态化燃烧过程中有效地抑制流化床床料黏结现象的发生；通过对实验中形成的结团进行扫描电子显微镜X射线能谱(scanning electron microscopy/Energy-dispersive X-ray- SEM/EDX)，对床料进行X射线荧光光谱(X-ray fluorescence，XRF)分析，结果表明石煤灰中的Al和Fe能够与生物质灰中的碱金属化合物以及低熔点共熔物发生化学反应生成高熔点物质，并且覆盖在生物质碳颗粒与石英砂颗粒表面形成隔绝层，从而阻止低熔点物质的生成与迁移。

The AE rate and rising time can be employed to predict two "critical points" of wood fracture damage. The first point means the material is in the state of slight danger and the second point means the material is in the state of serious danger.

4声发射信号的声发射率和上升时间可以预测材料开始断裂进入危险期的和材料大量纤维断裂进入严重危险期的两个&临界点&。

Splitter valves Shunt valve can play the role of segregation and convergence, the material from the collection of more material to the point or to spread from one point to multiple points.

2.5、分路用阀分路阀可以起到分流和汇流的作用，将物料从多点汇集到一点或者将物料从一点分散到多点。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。