正位

The operating principle of a novel push-pull forward converter is introduced.

介绍了一种新型推挽正激电路的工作原理，对环流过程进行了透彻分析，分析了箝位电容和变压器原边漏感对电路工作的影响。

objective:to study and analyze the features of lower limb fatigue fracture in the special force by means of radiodiag-nosis.methods:anterior-posterior and lateral films and clinical follow-ups were made to all the affected limbs in the56cases of lower limb fatigue fracture from june2003to feb.2006.results:through medical history and radiodiagnosis all the cases were giv-en definite diagnosis,achieved good treatment results and all had clinical follow-ups.the average length of clinical follow-ups was3months.following treatment,all patients returned to work and resumed training.conclusion:lower limb fatigue fracture finds a rather high incidence in the special force.special features could be seen in the x-ray film,which has obvious clinical significance in the differential diagnosis of other diseases.

摘要］ 目的：分析特种部队下肢疲劳骨折的x线特征性表现和鉴别诊断。方法：从2003年6月～2006年2月，对56例来院就诊治疗的下肢疲劳骨折的患者全部进行患肢x线正侧位片检查和随访。结果：本组病例依据病史和x线分析，均明确诊断，经治疗后效果好，全部获得随访，平均随访时间3个月；骨愈合时间1～2个月，全部恢复工作和训练。结论：下肢疲劳骨折在特种部队发病率高，x线片中具有特征性表现，与其他疾病的鉴别具有重要的临床意义。

Just as much as any other historian, an archaeologist studies and tries to reconstitute the process that has created the

正象任何一位历史学家那样，考古学家研究调查并尽力去重构一个过程。

Just a——uch as any other historian, an archaeologist studies and tries to reconstitute the process that has created the human world in which we live -- and us ourselves in so far as we are each creatures of our age and social environment.

正象任何一位历史学家那样，考古学家研究调查并尽力去重构一个过程。这个过程创造了我们生活的人类世界，也创造了我们自身，因为我们都是我们所处的时代和社会环境的产物。

Place the animal in the right lateral recumbency on a cardiac mattress so that the point of maximal intensity of the heartbeat is centered over the cardiac cutout in the cardiac mattress.

让动物保持在右侧卧摆位，放在一个心脏检查专用的床垫，所以心跳强度最高的点，就正对着，床垫为心脏检查，专门切割开位置的中央。

Mwww.cwysq.com Place the animal in the right lateral recumbency on a cardiac mattress so that the point of maximal intensity of the heartbeat is centered over the cardiac cutout in the cardiac mattress.

g； U \，|7 qwww.cwysq.com 让动物保持在右侧卧摆位，放在一个心脏检查专用的床垫，所以心跳强度最高的点，就正对着，床垫为心脏检查，专门切割开位置的中央。

Afterwards China is given out resonantly for president Ren Zhengfei " hibernate is talked " hind, the in-house mail that Ma Yun of of Chairman Alibaba board of directors sent another economic leader of domestic employee yesterday also exposure is on the network, this seals a name to be " the mission in in the winter " in-house letter says: We are to will appear to the basic judgement of global economy bigger question, in the near future economy enters exceedingly difficult period likely.

继华为总裁任正非响亮地发出"过冬论"后，国内另一位经济领袖阿里巴巴董事会主席马云昨天发给员工的内部邮件也曝光在网络上，这封名为《冬天里的使命》的内部信称：我们对全球经济的基本判定是将会出现较大的问题，未来几年经济有可能进入非常的困难时期。

As the war between the colleges rages on an old enemy senses that his chance to revenge a bitter defeat has come.

但是命运还没和他们了结，书院之间正进行着酣战，而这时，他们的一位夙敌觉察到该他出手了，为他曾经的残败报复的时机到了。

Now he seems bent on using another medieval Scottish hero, Robert the Bruce, to work the same magic for his Scottish National Party.

如今的萨尔蒙德正努力搬来另一位中世纪苏格兰英雄罗伯特·布鲁斯，希望依样画葫芦能为他的苏格兰民族党抹上同样的奇幻色彩。

The effects of maize roborant and uniconazole on plant height and grain yield of hybrid maize Zhenghong311 were investigated through field experiment in high altitude region of Panxi.

采用田间试验方法，在高海拔的攀西地区研究了玉米健壮素和烯效唑对杂交玉米新品种正红311株高和产量的影响，结果表明：小喇叭口期叶面喷施玉米健壮素有显著的降高效应，株高和穗位高分别降低12。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐