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In the dissertation, principles of phase-shifted full-bridge ZVS PWM and push-pull boost converter are analyzed; Reason of duty ratio dropping out and solution measures are introduced at the same time; The magnetic biasing and ZVS methods of Lagging brachium are studied detailedly in the bidirectional DC converters.

在本文中首先分析了移相全桥式ZVS-PWM功率变换和推挽式DC／DC Boost功率变换的工作原理，分析了移相全桥式滞后臂实现零电压关断困难以及占空比丢失的原因以及采取相应的改善措施，分析了双向DC／DC变换器产生偏磁的原因以及采取抗偏磁的措施。

The setting in which most organizations operate has shifted, as Hagar notes, from harmonious and supportive to becoming much more cacophonous and contentious.

就像夏甲所提到的，多数组织运行的环境已经由和谐互助转变为矛盾重重。

Only at the end of the movement, in a quiet coda, are these mosaic-like fragments seen to have been the building blocks of a single cantilena ; the psychological climax – the final synthesis of the entire melody – is thus shifted to the tranquil closing pages of the movement.

只有在乐章的末尾一个安静的结束句里，马赛克式的片段构成了单声部的坎蒂列那；情感上的高潮——整个旋律的汇总——然后转换到乐章安静的尾声。

In this course, blood capillary forming and tumour are grown and shifted and close-ly related with.

在此过程中，微血管的形成同肿瘤生长和转移密切相关。

Then the focus was shifted from polyacetylene to carbonaceous material, which have the same pi electrons.

此后 ，研究的重点从聚乙炔转移到具有同样的 pi电子的碳材料上。

The peak potential of catalase is shifted to more negative value when the PH increases.

PH值增加的时候过氧化氢酶的潜峰值的负值随之增加。

As for the diffusive term, it is shifted to undetermined time level to be discretized by divided central difference. The shifting error will be small for weak diffusion problems.

对于弱扩散问题，由于扩散系数比较小，这种转移引起的误差也比较小，从而可以期望得到更精确的数值结果。

Within just a few years its centre of gravity has shifted from the developed to the developing countries.

在短短几年内，它的重心已经从发达国家转移到发展中国家。

Europe's economic centre of gravity shifted northward.

欧洲的经济重心向北移了。

The chromatic dispersion minimum for this fibre type is shifted into the 1550 nm wavelength region.

这种光纤类型的色散最小位移到1550nm波长区域。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。