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The converter can be improved just by exchanging the position of the resonant inductance and the transformer such that the transformer is connected with the lagging leg. The improved converter has several advantages over its counterpart, e.g., the clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. The operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. The effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined.The improved converter is adopted to design the DC/DC converter of secondary power supply in HVDC power system.

本文将谐振电感和变压器交换位置，使变压器与滞后桥臂相连，这样箝位二极管在一个开关周期中只导通一次，同时零状态时谐振电感电流较小，有利于提高变换效率和减小占空比丢失，本文分析改进后变换器的工作原理，并与改进前的变换器进行对比，讨论隔直电容在不同位置对变换器工作的影响，确定一种最佳工程方案。

Blood donation is the duty of every citizen of healthy.

献血是每一位健康公民的责任。

The question whether participation in public affairs, in blood revenge or atonement, is a right or a duty, does not exist for the Indian

参与公共事务，实行血族复仇或为此接受赎罪，究竟是权利还是义务这种问题，对印第安人来说是不存在的

Public prosecution mechanism thinks, authentic of fact of crime of bloodguilty of do violence of small the Qin Dynasty, answer to investigate its criminal duty with intended homicide.

公诉机关认为，小秦行凶杀人的犯罪事实确凿，应以故意杀人罪追究其刑事责任。

In domestic market, the heavy duty coupling for heavy rolling mill, plate mill, blooming mill and so on, mostly rely on importation.

项目介绍（简介、技术特点、应用范围、市场前景、效益分析及对投资者要求。500字以内

The workers in that Japanese automobile industry were required to do body mechanics before go on duty everyday.

那家日本汽车厂的工人被要求每天上班前先做健身操。

Years of business has always adhered to the product quality first, timely delivery as our own duty, for the purpose of good service, and won Jiachen Tianjin Auto Parts Manufacturing Co., Ltd., Changchun Yingli Auto Parts Co., Ltd. and other units praise, You also become the company matching FAW Car, FAW-Volkswagen, Shanghai Volkswagen, Tianjin FAW Toyota, Xiali groups such as automotive interior decorating plastic parts sentinel provider. Enterprises in 2005 with the German Boggs Co., Ltd. established friendly and cooperative relations with the world-renowned German Mercedes-Benz, Volkswagen Audi, Volvo and other cars with the kits, are broad prospects for enterprise development, environmental good.

企业10多年来始终坚持以产品质量为第一、交货及时为己任、良好的服务为宗旨，赢得了天津佳诚汽车零部件制造有限公司、长春英利汽车零部件有限公司等单位的一致好评，也成为了贵公司所配套的一汽轿车、一汽大众、上海大众、天津一汽丰田、夏利集团等各类汽车内饰装饰塑料件定点供应商。05年企业又与德国博格斯股份有限公司建立了友好合作关系，与世界知名德国奔驰、大众奥迪、沃尔沃等车型配上了套，企业发展前景广阔，环境良好。

It is our duty to cultivate the spirit of boldness and fearlessness.

我们的责任是培育大无畏的精神。

These young people regard the construction of the borderland as their duty.

这批青年将建设边疆引为己任。

We have a right and duty to protect our borders.

我们有权利和责任保护我们的边境。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。