相移

The proposed charge circuit can significantly reduce the circumfluent loss appearing in the conventional phase-shifted full bridge. And it can achieve ZVS over almost the full load-range, which results in high efficiency. Even more, the requirements to the filter both at the input and the output can be also significantly reduced.

这种新型充电电路可以极大的减小表现在传统移相全桥中的环流损耗，在整个负载范围内都能够实现软开关，效率比传统的移相全桥高出许多，滤波器能做得小很多。

In this paper, the transfer matrix of circular polarization phase shifter is derived through coupled wave theory, transfer characteristics of elliptically polarized wave, circularly polarized wave, linear polarized wave are considered.

根据铁氧体耦合波理论推导出圆极化移相器对任意极化电磁波的传输矩阵，在此基础上研究了椭圆极化波、线极化波、圆极化波在移相器内的传输特性。

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

A novel phase-shifted zero-voltage and zero-current switching PWM DC/DC full-bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of Power Electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase-shifted zero-voltage switching PWM DC/DC full-bridge con...

本文在对近年来电力电子学科的发展高度综述和对现代高频软开关功率变换技术理论基础深入研究的基础上，对传统的移相控制ZVS PWM DC／DC全桥变换器的工作原理、电路特性、存在的缺点进行了分析，在此基础上提出了一种改进型的移相控制ZVZCS PWM DC／DC全桥变换器。

The relationship between the accuracy of OAF algorithm and phase shifter errors is given.

给出了这种方法的相位复原精度与移相器的位移误差之间的关系式，从关系式中可见，OAF算法大大地减小由于移相器的位移误差而引起相位复原误差。

These methods can make use of redundant switching status in order to make capacitors of different cells connect in parallel and to make energy transfer between adjacent cells in different switching status. Carrier phase-shifted PWM methods are further studied.

最后，本章提出了载波移相PWM方法对于新型拓扑的特殊意义，即采用移相控制，充分利用新型拓扑的各种开关冗余状态，通过变流器各级单元电容之间的并联状态补充能量，可以有效改善基波周期内各级单元的电容电压平衡问题。

Kinds and selecting principle of phase shifter of the key devices in television receiving system of autotrackinging synchronous telecommunication satellite are analyzed. Transcendental equation of the propagation constant of latching ferrite phase shifter is derived, its properties are discussed.

分析了自动跟踪同步通信卫星电视接收系统中的关键元件移相器的分类及选取原则，推导了锁式铁氧体移相器传播常数的超越方程，并对它进行了详细地讨论。

Instead, the erosion resistance is increased after FSP. The refined and uniformly distributed second phases, which are resulted from the FSP, can help to increase the hardness and further reduce the brittle fracture of the specimens. Si and nvAl3CuNi phases are usually found near or end of the grooves with little fracture. But the τ1 (Al9FeNi) phase is easier to be removed by the erodent cutting. It can be inferred that Si and nvAl3CuNi are useful to improve the erosion resistance of A384 aluminum alloy, but τ1 (Al9FeNi) phase is detrimental for the erosion resistance of A384 aluminum alloy.

经摩擦搅拌制程改质后，硬度提升，晶出相细化且均匀分布，降低脆性龟裂的现象发生，有助於改善A384铝合金的磨耗性质，其中，亦发现在冲蚀沟槽附近有残留和脆性破裂之共晶Si颗粒和nvAl3CuNiw晶出相，推测此两相为A384铝合金中有助提升磨耗阻抗的第二相；而τ1(Al9FeNi)晶出相则容易受到冲蚀颗粒的切削而被冲蚀颗粒移除，增加材料的重量损失，推测τ1(Al9FeNi)晶出相为A384铝合金中较不耐磨耗的晶出相。

The use of perfluorous nonene solvent allowed the formation of a fluorous biphase system with the ester products thereby driving the esterification equilibrium to move rightly.

在不移走生成物的条件下，酯与全氟壬烯能形成氟两相体系而脱离酯化可逆反应体系，促进反应平衡右移，使收率提高10%～47%，氟溶剂通过冷却和简单的相分离，就可回收并直接套用。

Taking advantage of the reciprocity of rotary field phase shifters and nonreciprocity of ferrite circle polarizers, high power duplexing rotary field phase phase shifters are designed.

利用旋转场移相器的互易特性和铁氧体圆极化器的非互易特性，设计出高功率双工旋转场移相器。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。