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Parallel operation performance and implementation of the APF based on the capacity-limitation are explored in this paper.

本文主要研究了一种基于限容控制策略的单相有源电力滤波器并联运行特性及其实现方法。

A invariable -angle control circuit of parallel resonance converter which can get high precise control of inverter operating state is designed. Using the technique of phase-lock loop, the circuit implements automatic tracking to inverter operating frequency and constant control of capacitive power factor angle.

论文设计了能在频率自动跟踪的基础上实现高精度的逆变器运行状态控制的并联型逆变器定角控制电路，该电路采用锁相环技术，实现了逆变器工作频率的自动跟踪和容性功率因数角恒定控制。

The load characteristic and control objective of parallel resonance converter is analyzed, and the conclusion that it can work on the safe side only if it works under the state of capacitive and rough resonance is drawn.

分析了并联谐振逆变器的负载特性及控制目标，通过对并联型谐振逆变器各种工作状态的分析，得出其必须工作在容性近谐振状态下才是安全可靠的结论。

There are a lot of harmonic sources in power systems. It may cause series resonance and parallel resonance between inductive elements and capacitive elements of the power systems.

在电力系统中存在大量的谐波源，使得电力系统网络中感性元件与容性元件之间可能发生串联谐振或者是并联谐振。

Secondly, in order to achieve the same capacity, the diamond-shaped in the world of points will have to carve the deeper, we will receive from the reference in the natural world, bees in cellular would be for the width of the parallelepiped, results in a xuetie, bio by instinct know, only this arrangement can store more fengbei.

其二，为了到达同样的容度，钻石不神的网穴不离得雕得更浅一些，差此，我们从自然界洋亦可得回鉴戒，蜜蜂的蜂窝不离是由六背体的宽穴所组不败，生物是凭着本能懂得，只有这栽摆列才能贮存更众的蜂密。

So for instance, if you were passing a parameter that held the name of a town, calling the parameter town_name would be preferable to something more vague.

举例来说，如果你要代入一个代表城镇名的参数，参数"城镇名称"将比模糊的"使用者输入"来的容易懂。

The removed pulmonary tissues made up about 20%- 30% of the unilateral lung parenchyma.

目的评价在肺或食管肿瘤手术中同期行肺减容术的可行性和效果。

Methods The left ventricular diastolic function,the blood speed during quick filling phaseof left ventricular of the mitral valve orifice,the peak value of the late phase of left ventricular diastolic pariod;E/A ratio,the time for isovolumetric relaxation phase of left ventricular,the reducel time of peak E,and the distance between peak E of mitral valve and intervertricular septum of left ventricular were measured respectively.

摘要］ 目的应用彩色多普勒超声心动图测定冠心病左室舒张功能，临床提供可靠的诊断及治疗依据方法分别测定冠心病组及对照组的左室舒张功能：二尖瓣口左室快速充盈峰值血流速度即E峰；左室舒张晚期峰值速度即A峰；E/A值，左室等容舒张时间，E峰减速时间，二尖瓣叶E峰与室间隔左室面的距离。

Pearl powder essence and VC can closely combined;with silky and delicate texture,it can perfectly conceal flaws,whiten the skin and produce perfect fair and transparent makeup.

珍珠粉精华和维他命C亲密融合，柔滑细腻的质地，完美遮盖瑕疵，亮白肌肤，缔造自然无瑕的白皙透明妆容。

In order to find new pegmatite Nb-Ta ore-deposit, it is very important practical-significances to ascertain the host structure characteristics and the relations between the tectonic epochs and ore-forming.

通过查明矿床的容矿构造特征以及构造期次与成矿的关系，对寻找新的铌钽伟晶岩矿床具有重要的实践意义。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。