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3At%. Based on the measurement of the grain size, phase contents and their composition, the composition of the trinary interface phase was determined to be 〓, with the thickness of interface phase about 1. 3nm, corresponding to 4～5 atomic layers, and with a lower atomic density as well as a high degree of disorder. In the case, the obtained nano-structure remains stable, unchanged against the continued electropulsing.

在晶粒尺寸和相含量及其成分测定的基础上，确定出三元界面相的化学成分为〓，界面相的厚度约为1.3nm，相当于4～5个原子层，而且具有低原子密度和高无序度，此时，纳米结构相对稳定，在延长的电脉冲处理过程中基本保持不变。

Two mathematical models have been deduced in the case of dense-phase and light-phase conveying respectively. Combining the capacitance phase concentration sensor designed and the traditional Venturi flow meter, the powder velocity and instantaneous mass flowrate are obtained by measuring concentration and differential pressure signal.

本文最后提出了一种差压—浓度法测量气/固两相流瞬时质量流量的新方法，分别建立了稀相和浓相输送情况下的粉料速度和流量测量的数学模型，即将所研制的电容式相浓度传感器与传统的文丘里流量计相结合，通过测量浓度信号及差压信号，求得粉料的传送速度及其瞬时质量流量。

To realize automatic measuring of this method and improve it's precision, in this thesis the liquid crystal cell is used as a phase-shifter for the traditional DSSPI successfully. The phase-shifting DSSPI system is designed based on the liquid crystal phase-shifter and Wollaston prism.

为了进一步实现该方法的自动化检测，提高测试精度，在本论文中，成功的把液晶体做相移器应用于传统的数字错位散斑干涉计量，设计了基于液晶相移器和渥拉斯顿棱镜的数字错位散斑干涉系统。

Tetragonal phase ZrO2 nano-powders containing 3%Y2O3 was prepared via the coupling route of water-oil emulsion with methyl oxalate homogenous precipitation, in which xylol was used as the oil phase, span-80 as the surfactant, and an aqueous solution containing zirconium as the water phase.

摘 要：采用二甲苯为油相， span-80为表面活性剂， Zr(NO3)4(3Y)的水溶液为水相的W/O 乳浊液和草酸二甲酯均匀沉淀结合法制备四方相ZrO2(3Y)纳米粉。

Tetragonal phase ZrO2 nano-powders containing 3% Y2O3 were prepared via the coupling route of W/O emulsion with urea homogenous precipitation, in which xylol was used as the oil phase, span80 as the surfactant, and an aqueous solution containing zirconium as the water phase.

摘 要：以二甲苯为油相，span80为表面活性剂，Zr(NO3)4(3Y)水溶液为水相的W/O 乳浊液，采用尿素均匀沉淀结合法制备四方相ZrO2(3Y)纳米粉。

The X-ray diffraction patterns were calculated analogically by using Rietveld method and the phase content in rare-earth two phase Nd2Fe14B/α-Fe magnet was determined based on standardless quantitative phase analysis.

稀土双相永磁合金是基于软磁相的高饱和磁化强度和硬磁相的高各向异性的特点，通过两相晶粒在纳米尺度上交换耦合而成的一种纳米晶复合永磁材料，它具有显著的剩磁增强效应，可望获得较高的综合磁性能[1~3]。

Discussion on membrane formation mechanismBased on the Flory-Huggins theory, Phase equilibrium equations of PVDF/DMAc/water ternary system were wrote out, and the binodal and spinodal lines in the phase diagrams of the system were obtained via numerical calculation. Combined the kinetic description and the thermodynamic phase diagram, membrane formation process were analyzed, which prepared the theoretical foundation for the further membrane formation mechanism research.

论文主要从如下四个方面展开：(1)PVDF疏水膜成膜分相机理探讨基于Flory-Huggins理论推导了三元制膜体系凝胶分相组成的线性表达式，并通过&浊点法&测定了PVDF／N，N-二甲基乙酰胺／水／成膜体系的凝胶边界线组成，通过对实验数据的拟合，得到了简捷直观的线性表达式，ln(φ_1)/(φ_3)=bln(φ_2)/(φ_3)+a，误差小于3％。

The reduction temperature has great influence in constituting slag and iron phase coacervation. High temperature will add iron phase carburize and fall down melting and accelerate iron phase coacervation.

高温下有利于铁相渗碳，熔点降低，加速铁相凝聚，温度在1330~1380℃时得到的铁颗粒大小较均匀；④渣相碱度高低对渣铁的分离产生较大的影响。

The paper aim at the three-phase voltage source SPMW-inverter, which is applied in variable-speed wind turbines system, adopts the theory of nonlinear counterchange and nonlinear feedback, creates the three-phase voltage source PWM-inverter's nonlinear model, and deduces it's feedback linearization equation, consequently, the three-phase voltage source PWM-inverter active and reactive current decoupling control is proposed.

该文针对变速风力发电机组系统所用的三相电压型SPWM 逆变器，采用非线性变换和非线性反馈理论，建立了三相电压型 PWM 逆变器非线性数学模型，推导出其反馈线性化方程，从而得出三相电压型 PWM 逆变器有功电流和无功电流的解耦控制策略。

At last. on the basis of comprehensive studies of the glacial, lake, periglacial phenomena .palaeosols and paleontology in the research areas. the late stadial of the Last Glaciation can be divided into three periods: the early phase, 25000-20000a. B. P.. with the cold and wet climatic conditions; the middle phase, the full of last glacial maximum. 20000-16000a. B. P., with the cold and dry climatic conditions; and the late phase, 16000 10000a. B.P., with the warm and dry climatic conditions besides the Younger Dryas event.

最后，根据对研究区的冰川、湖泊、冰缘现象、古土壤和古生物等在末次盛冰期中的发育、演化状况的综合分析，把末次盛冰期大致划分为三个阶段：早期，25000-20000a.B.P。，气候条件主要表现为冷湿；中期，20000-16000a.B.P。，气候条件主要表现为冷干；晚期16000-10000a.B.P，气候条件主要表现为温干，但Younger Dryas事件也有反映。

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。