单相

Experimental design of the circuit - the transistor triggered by a single node of the single-phase half-controlled bridge rectifier circuit, through the step-down, rectifier, output waveform, circuit design including DC motors, Thyristor, single crystal, such as rectifier circuits.

实验设计电路-由单结晶体管触发的单相半控桥式整流电路，通过降压、整流、输出波形，电路设计包括直流电动机，晶闸管，单结晶，整流电路等。

Jet Pump; Oil Well; Sand Discharging; Basic Characteristics; Dimension; Efficiency; Influence Factors; Single-Phase Flow; Two-Phase Flow; Numerical Simulation; Hydropathic Transportation; Experimental Research; Software Development; Engineering Application

射流泵；油井；排砂；基本特性；最纲；效率；影响因素；单相流；两相流；水力输送；液固两相流；数值模拟；实验研究；软件开发；工程应用

The 60kVA three phase photovoltaic grid -connected power system made of three single phase 20kVA photovoltaic grid -connected power equipment based on technology of parallel combined shift phase PWM have been operated.

以移相PWM并联组合技术为基础，采用3 个单相20kVA的光伏并网发电装置组成60kVA三相光伏并网发电装置，已投入运行。关键词：光伏并网；功率组合技术；移相PWM；电流跟踪

Nanoparticle of an appropriate proportion were homogeneously dispersed in the PI matrix, and the interfacial adhesion between the matrix and the nanoparticle was hence strong owing to the high specific surface area and reactivity of the nanoparticle. Subsequently, the molecular chains of PI attained unchanged or even increased interaction at a proper mass fraction of the nanometer particle, which contributed to improve the wear-resistance of the nanocomposites.

采用PI的原位聚合填充方法，利用聚酰亚胺与无机纳米表面较强的相互作用（如静电作用、较强的范德华力、氢键甚至化学键的形成），用非水悬浮工艺制备了无机纳米/聚酰亚胺纳米复合材料，率先用大型分析仪器全面地表征了复合材料的结构，采用原位聚合填充法制备的聚酰亚胺复合材料中，无机纳米分散状态良好；无机纳米氧化物/聚酰亚胺复合材料的结构表征显示出PI有机相和SiO〓无机相之间形成了键联型复合体系，两相相互影响；在复合体系中，单相本体的结晶结构并未发生改变；在摩擦过程中纳米氧化物没有发生价态的转变；无机纳米氧化物的加入，提高了聚酰亚胺的耐热等级；适量纳米氧化物并不影响复合材料的机械性能， 2。

The second advantage is that globose targe is the most sensitive to variety of coal powder concentration In the experiment, a testing piping system for coal powder and air two phase flow was built in laboratory. Experiment adopt disk target and spherical target two kinds of target.

将两组试验数据拟和得到的空气单相流关系式的斜率与两相流关系式的斜率进行比较，球形靶试验数据拟和公式的斜率较大，说明球形靶确实比圆片靶对两相流粒子浓度的反应灵敏度高。

Based on Chen's correlation and our experimental data, a new revised correlation was proposed for the calculation of frictional pressure drop of gas liquid two-phase flow in helically coiled tubes oriented with various axial angles.

在对试验结果及前人研究结果进行详细分析的基础上，获得了第一个能适用於不同倾角放置螺旋管的单相及汽液两相摩擦阻力计算式，从而为汽液两相摩擦阻力及螺旋管的进一步研究和应用提供了依据。

The discharge capacity of the alloy composed solely of C14 Laves phase was only 220 mAh g〓.

而以C14相为主相的快凝合金的放电容量较低，C14型Laves相单相合金的放电容量只有220 mAh g〓。

After power-flow calculation of 110 kV transmission line with open-phase fault, this paper addresses the precautions during long time operation of open-phase transmission line and main transformer, and analyzes the feasibility of load transfer of open-phase line in closed loop network.

文章通过计算 110kV线路单相缺相故障时的潮流情况，阐明了缺相线路及主变压器长时间运行时的注意事项，并对缺相线路能否合环倒负荷问题进行了分析。

For the condition where both outlet states of cold plate are at superheated states, the mass flowrate for the fixed heating load is marginally higher than that of the smaller heating load, and the difference is insensitive to the rise of heating load. For this situation, the effect of accelerational pressure is negligible, and it is mainly attributed to two-phase/single-phase distribution pertaining to the effect of heating load.

若两冷板的出口均为过热状态下，固定热负载一端的流量会略多於施加瓦数较高的一端，且其差异量会随热负载不同而缓慢增加，在此一状况下，则加速度压降可以忽略不计，其原因在於单相／两相流在热负载下单相区与两相区所占的比重不同所致。

The thesis mainly researches on the single phase AC/AC converter in the topologies including AC_Buck and AC_Cuk. Firstly, the operating principles of the two converters are analyzed in detail and the rules of their parameters design are educed; The commutation of their power switches which is the key of these topologies to realize is analyzed in detail and a feasible solution which can be named RCD-Commutation mode is presented and proved effectual by theory analyses and simulation results.

本文首先分析了AC_Buck变换器的变换原理，得出了电路参数设计准则；继而对电路实现的难点即功率管换流问题进行了深入分析，并得出了一种可行的解决方案即RCD换流方案；作为对简单拓扑单相直接AC/AC变换器控制策略的探索，本文以AC_Buck为平台，对电压单闭环瞬时值控制方案进行了研究，在理论分析和仿真研究的基础上设计并制作了一台采用RCD换流、电压单闭环瞬时值控制的AC_Buck变换器原理样机。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。