后前位的

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。

The previous record of this type was the calculation of the five trillionth bit between March and August 1998, by PiHex.

前一个类似的纪录是从1998年3月到1998年4月对于 Pi 的小数点后第五万亿个比特位的计算，这也是 PiHex 创造的纪录。

The previous record of this type was the calculation of the forty trillionth bit between April 1998 and February 1999, also by PiHex.

前一个类似的纪录是从1998年4月到1999年二月对于pi的小数点后第四十万亿个比特位的计算，这也是 PiHex 创造的纪录。

Five years later those who had passed in the upper ten percent all,without exception, had executive positions, while not a single young～of the lower twenty-fiveper cent had become an executive.

五年以后那些在考试中名列前十位的人全部走上了管理岗位，无一例外；考试中位列后25名的人之中没有一个当上管理人员。

Five years later those who had passed in the upper ten percent all, without exception, had executive positions, while not a single young man of the lower twenty-five percent had become an executive.

五年以后那些在考试中名列前十位的人全部地、无一例外地跨上了管理岗位，而考试中位列后二十五名的人中没有一个能当上管理人员。

We chose 15 fresh adult knee samples without obvious genual diseases ( 5 examples of extended position,5 examples of flexed 45 degrees position, 5 examples of flexed 90 degrees position ), embed the samples of different functional positions with 5% blue glutin, and obtained 0.5mm sample by mill cuts technology at low temperature condition.

对无明显膝关节病变的成年志愿者60人，在MRI上选用SE-T1加权，做层厚2.0mm无间距扫描，TR1500ms，TE15ms。测量膝关节由全伸位到屈曲位前、后交叉韧带的长度和厚度，并观察髌股位置关系。

The sensorimotor representation of the body is known to be ipsilateral in the anterior lobe and bilateral in the posterior cerebellum.

身体感觉的物态化已知是位於小脑前叶的同一侧以及左右对称在后小脑区。

Monopdization of tobacco gleans the State monopolizes tobacco transaction by making the law t0guarantee the financial income The Law of Tobacco Monopolization and The Law of Price are ordinary laws It is not reasonable to make the prices of tobaccos be regulated by market on the ground that special laws are prior to ordinaty laws and subsequentlymade laws are prior to the previouslymade laws This issue also involves the scope of authority of the legal interpretation,and the effectiveness of the legal interpretation,which needs to be closely studies and considered.

烟草专卖是国家通过制定法律，对烟草买卖实行垄断，以保证财政收入。《烟草专卖法》和《价格法》是同一位阶的普通法，以特别法优于普通法、后法优于前法的理由，主张将烟草价格推向市场，是不能成立的。这一问题还涉及法律解释的权限、法律解释的效力问题，亟需认真研究和对待。

Results The penumatization rate of total or inferior part of middle turbinate correlated positively to the inflammation of anterior ethmoid and maxillary sinuses. Compared with patients with normal frontal sinuses, the vertical diameters of agger nasi cells of patients with frontal sinusitis were larger(11.70±5.50 mm and 8.54±3.67 mm respectivevy, p＜0.01).Compared with patients with normal maxillary sinuses, the Haller's cells of patients with maxillary sinusitis were larger (77.8% and 33.3%,P＜0.05)and the amount of inflammatory Haller's cells of the latter was more abundant than that of the former(91.6±17.8 mm2 and 41.6±12.6 mm2, respectively, P＜0.05). The deviation of uncinate process was one of the factors of maxillary sinusitis .The sizes of ethmoid bullae increased with the soft tissue thickening in anterior ethmoid sinus, the large ethmoid bulla may cause anterior ehmoid sinusitis.

结果 全中甲或中甲下部气化的发生率随前筛、上颌窦内软组织影增厚而升高；有额窦炎组病人的鼻丘气房最大纵向垂径明显大于无额窦炎组(分别为11.7±5.5 mm和8.5±3.7 mm，P＜0.01)；Haller气房在上颌窦炎组和非上颌窦炎组的发生率无显著差异，但前组发生炎症的Haller气房明显多于后组(分别为77.8%和33.3%，P＜0.05)，且前组Haller气房的冠状位截面积明显大于后组(分别为91.6±17.8 mm2和41.6±12.6 mm2，P＜0.05)；钩突角度随上颌窦内软组织增厚而减小；筛泡冠状位截面积随前筛窦内软组织增厚而增大(P＜0.01)。

It was found that earlytransition metal monoxides ScO, TiO and VO do not form noble gas complexes, whilethe late transition metal monoxides coordinate one noble gas atom in forming thelinear NgMO(M=Cr, Mn, Fe, Co, Ni) complexes.

对于前过渡的ScO，TiO和VO分子，它们的9σ，1δ和4π价分子轨道能量很高，不能有效地与稀有气体原子形成络合物，而对于后过渡金属一氧化物则可以配位一个稀有气体原子形成直线型的NgMO(M=Cr，Mn，Fe，Co，Ni)络合物。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。