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Firstly, a 2D quasi-single phase liquid turbulent flow model was developed. In this model, interactions between liquid and bubbling gas phase were taken account of, i.e., interphase drag force and the turbulent energy induced by the bubbling gas phase.

首先，建立了以为基础的塔板二维拟单相流模型，其次，建立了三维两相双流体湍流模型，最后，在双流体流体力学模型的基础上，建立了塔板上液相传质模型。

In the pulse plate column of the plate's aperture being 3.2 mm, the open mesh area percentage is 23%, and the distance between plates is 50 mm, extraction: phase ratio 3:1, reaction order: 2~3; washing: phase ratio 6:1; re-extraction: phase ratio 3:1, the product phosphoric acid and all the content of impurity can attain or overmatch the old-style extraction equipment.

在脉冲筛板萃取塔中，在萃取时相比为3：1，反应级为2~3，洗涤时相比为6：1，反萃时相比为3：1的条件下，所得磷酸及各项杂质含量指标均达到或优于老式萃取设备。

The mechanism of the phase transfer catalytic polycondensation was investigated, and a diagram of the phase transfer catalytic cycle was suggested. The reaction locus was found to be in the organic phase.

相转移催化反应是近年来发展起来的一种有机合成新方法，特别在有机合成方面已得到广泛的应用，有些已在工业上得到了推广。

The conductor transposition principle and parameter calculation method of four-phase power transmission line with arbitrary conductor configuration are researched, and the compatibility between four-phase and three-phase power transmission systems is analyzed.

讨论了导线任意排列的四相输电线路的换位原则与参数计算方法和四相输电线路与现有三相系统的兼容问题。

The analysis of polymer structure indicates that the non-crystalline phase is the majority of the agglomerate structure and the crystalline phase is the minority, the highest crystal value only reaches the level of 0.1646;There is a definite interactionadditives and PVA, which not only reduces the crystal value of ASPE to make amorphous areas enlarge but also improve the ability of segmental motion by destroying the well-regulated and orderly character of polymer chain, meanwhile restricts the mobility of potassium cation and enhances the anionic transference number of hydroxide ions, all these improve the ionic conductivity;The ionic conductivity occurs essentially within the amorphous phase of the ASPE;The structure of ASPE doesnt change in the range of our test temperature, this means, the temperature only takes effect on degradation of complex in certain compositions, ionic mobility and segmental motions of the polymer chain.

聚合物结构分析表明：碱性固体聚合物电解质中凝聚态结构以非晶态为主，仅有少量的晶态，结晶度最大为0.1646；添加的各组分与PVA之间都有一定的相互作用，这种作用不仅破坏了聚合物链段的规整性，能够降低聚合物的结晶度，增大无定形区域，提高链段运动的能力，同时这种作用限制K~+离子的运动，提高OH~-的迁移率，从而提高离子电导率；碱性聚合物电解质的离子传导主要发生在无定形区；在本实验测试离子电导率温度范围内，聚合物内部的结构不会发生变化，即温度只会影响电解质内部络合物解离程度和载流子迁移以及聚合物链段运动的情况。

By demonstrating the feasibility of time stepping quadrature phase shifting method, we successfully remove the phase shifting device from the system and basically eliminated the errors induced by the inaccurate phase modulation.

在演算法方面，藉由证实时进正交相移法之可行性，将光路中的相移装置移除，终於使得因为相位调制方法不精准所造成的误差得到彻底的改善。

In order to be fit for three-phase four-wire system, the method of balancing control using chopper presented in literature [29] is mended. The new standpoint that ip-iq detecting method based on three-phase three-wire system can be directly used in three-phase four-wire system is presented and proved.

分析了零序和负序电流对新型UPFC直流侧电容电压的不同影响，对文献[29]提出的传统UPFC的直流侧各电容电压的均衡控制方法进行了仔细研究，提出了采用B型直流斩波器来控制新型UPFC的直流侧电容电压的新方法。

The one-cycle control equation and control circuit in three-phase bridge is similar to the three-phase three-wire system,the control equation and control circuit in N-phase half-bridge is mainly set up through analysis to the circuit.

有源电力滤波器是一种可动态地补偿谐波和无功电流的电力电子装置，四桥臂三相四线制APF可用于三相四线系统的谐波和无功电流的补偿。

Firstly, harmonic detection method using ip,iq algorithm, which is based on the instantaneous power theory proposed by H.Akagi, is introduced briefly and is extended to detect positive or negative sequence of arbitrary order harmonic in single-phase system, three-phase three-wire system or three-phase four-wire system.

首先，本文简要介绍了基于瞬时功率理论的谐波电流检测方法——i_p，i_q算法，并将之推广应用于单相系统、三相三线制系统和三相四线制系统中任意次数谐波的正序、负序有功、无功分量的检测，大大拓宽了该优良瞬时谐波检测算法的应用范围。

The main work of this paper is as follows:(1) Ignoring other small content and indissoluble salt, only considering sodium chloride and sodium sulphate, and suggesting these is no Chemical reaction between soil and salt, the phase change rule of salty soil follow the phase change rule of 〓 ternary water and salt system, which obey the phase equilibrium theory.

本文主要进行了以下研究工作：(1)在只考虑NaCl与Na〓SO〓两种易溶盐，而忽略其它在盐渍土中含量与溶解度均较小的盐类，并假定NaCl与Na〓SO〓不与土颗粒发生化学反应的基础上，盐渍土的相变规律实质上是〓三元水盐体系的相变规律，并服从相平衡理论。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。