后室

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器作过电压；并分别对真空断路器切除空载及负载变压器作过电压的特点与影响作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器操作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器操作过电压；并分别对真空断路器切除空载及负载变压器操作过电压的特点与影响操作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

METHODS Ultravioletassay was used to determine the safflor yellow concentration in bio-logical samples.

kg-1 红花黄色素后，血药浓度-时间曲线符合一室开放模型，曲线下面积为57862.2μg？

On the day four rapid games, after the first one we went to smook to ease the tension, and also helped each other to remember what we had prepared games including opening and tactics.

当天四盘棋都是快棋，第一盘结束后，我俩就去了吸烟室，缓解一下紧张情绪，顺便也互相帮着回忆回忆头天研究的开局、战术，这些后面的比赛都要用到。

Methods Acoustic immitance determination including tympanogram and stapedius muscle reflex were performed with enhancement type middle ear analyzer-Madsen ZODIAC901 in 200 children with secretory otitis media before and after treatment. Psychological care was well done in sick children and their relatives.

用Madsen ZODIAC901增强型中耳分析仪对200例分泌性中耳炎按常规在治疗前、治疗后进行声导抗检查，测试项目包括鼓室导抗图、镫骨肌反射等。

Complications occurred in 6 cases, including 3 of ARDS, 1 of subphrenic abscess, leg compartment syndrome and skin necrosis respectively.

共发生并发症6例：呼吸窘迫综合征3例、膈下脓肿1例、小腿骨筋膜室综合征1例、小腿皮肤坏死1例，经相关治疗后均获痊愈。

Methods 53 patients with paroxysmal supraventricular tachycardia were given incremental doses of adenosine intravenously during sinus rhythm before electrophysiological study.

对53例阵发性室上性心动过速患者在窦性心律下经外周静脉推注递增剂量的腺苷后观察体表心电图上房室传导时间的变化。

Yet more than 25 years have passed since I sat finals and still I wake at night with my heart thudding, dreaming that I had forgotten to revise, or had had to take physics instead of philosophy.

上星期，我给女儿们保证，不管他们工作后做什么，怎么都不会这样糟糕。那时已是10点45分，她们都坐在餐室的桌子上，周围堆满了有关放热反应的笔记和&丢失的天堂&的引言。

AIM To investigate the effect of autonomic nerves on the transmural dispersion of effective refarctory period upon acute myocardium infarction in vivo.

目的 为探讨自主神经系统对在体家兔急性心肌梗死后跨室壁3层心肌细胞有效不应期离散度的影响。

The experimental system of metal fuel/water ramjet was introduced. The unchoked ramjet of metal fuel containing magnesium can burn steadily after once injecting water. In the experiment, the mass flux of water was stable and the pressure of chamber changed similarly with the secondary chamber.

介绍了金属燃料/水冲压发动机试验系统，采用非壅塞式构型实现了镁基金属燃料发动机一次加水后稳定燃烧，试验中进水流量稳定，补燃室与燃烧室压强变化相同。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。