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Abstract］ objective to explore the failure causes of mastoidectomy and precautions.methods the operation findings of 37 cases who underwent revision mastoidectomy from 1995 to 2005 were analyzed for causes of the primary procedures and revision mastoidectomy failure.results original symptoms disappeared.all cases achieved a dry ear after mastoidectomy 1～3 months.conclusion causes of failure of mastoidectomy include unfamiliarity with regional anatomy,absence of skill of surgeons,unadequate opening of mastoidale,and clinical experiences.each of these can result in residual lesion and inadequate drainage.some exceptions can also result in reoperation.to resect the pathological changes tissue thoroughly,to remain good drainage after operation,to manage some execptions are keys to prevent reoperation.

目的 探讨乳突根治术不能干耳原因及预防措施。方法对我科1990~2005年收治的37例乳突根治术不能干耳患者的再次乳突手术所见进行分析，并行二次乳突根治术。结果术后1～3个月患者原有症状消失、干耳。结论乳突根治术失败原因主要是术者中耳乳突解剖不熟、基本功不过硬、临床经验不足导致病灶残留、引流不畅和乳突尖开放不够及某些特殊情况所致。术中彻底去除病灶，保证术后引流通畅及特殊情况的处理，是防止二次手术的关键。

For, the rooms, though a beautiful scene to look at, and adorned with every device of decoration that the taste and skill of the time could achieve, were, in truth, not a sound business; considered with any reference to the scarecrows in the rags and nightcaps elsewhere (and not so far off, either, but that the watching towers of Notre Dame, almost equidistant from the two extremes, could see them both), they would have been an exceedingly uncomfortable business--if that could have been anybody's business, at the house of Monseigneur.

因为这些房间尽管漂亮豪华，具有当时最高雅最精美的设计和装饰，实际上已是摇摇欲坠。考虑到别的地方那些衣衫褴褛、戴着睡帽的穷汉们的存在（他们离此不远，巴黎圣母院的高塔差不多就在两极的正中，从那里可以眺望到这两处），这些华屋已成了令人极其不安的地方-一若是大人府第里也有人负责研究这个问题的话。

For, the rooms, though a beautiful scene to look at, and adorned with every device of decoration that the taste and skill of the time could achieve, were, in truth, not a sound business; considered with any reference to the scarecrows in the rags and nightcaps elsewhere (and not so far off, either, but that the watching towers of Notre Dame, almost equidistant from the two extremes, could see them both), they would have been an exceedingly uncomfortable business--if that could have been anybodys business, at the house of Monseigneur.

因为这些房间尽管漂亮豪华，具有当时最高雅最精美的设计和装饰，实际上已是摇摇欲坠。考虑到别的地方那些衣衫褴褛、戴着睡帽的穷汉们的存在（他们离此不远，巴黎圣母院的高塔差不多就在两极的正中，从那里可以眺望到这两处），这些华屋已成了令人极其不安的地方-一若是大人府第里也有人负责研究这个问题的话。

First, based on the research of vocality art and vocalization, I discuss how to set up reasonable aesthetics concept on tenor"s voice, then expatiate on the characteristics,of the tenor"s voice in bel canto and the theoretic significance of setting up reasonable sound aesthetics concept. This essay is mainly on the way and key point of constructing tenor" s voice, especially solving the core problem of alt skill. The essay argues that the construction of tenor" s voice is based on the mediant and undertone sections; finding the phonate source, practice step by step, surrounding the point , string and side of the voice; train the students using suitable vowels according to the students with different characteristics ; emphasizing that ten essential words are the golden key to solution of the core problem in the "closing " method.

首先从研究声乐艺术和发声方法的指导思想和出发点着手，探讨了如何建立科学的男高音声音审美观；进而阐述了美声唱法中男高音的声音特点及建立科学审美观的理论指导意义；本文着重提出了构建男高音声音的方法与要领(特别是解决高音技术这一核心问题)，本文认为男高音声音构建先以中、低声区为基础，从找发声点开始，围绕声音的点、线、面逐一训练，同时根据不同特点的学生选择合适的母音进行训练，强调了&关闭&唱法中十字要领是解决核心难点的金钥匙。

However, the use of film in photomicroscopy meant that a considerable investment in time, skill and effort was required by the teacher to produce even passable images.

然而，在 photomicroscopy 的电影的使用意谓了相当多的投资及时，技术和努力是在～手边生产甚至可通行的图像老师需要。

Pino was born in Bari on November 8, 1939, he began his studies at the city's Art Institute. In 1960 he entered Milan's Academy of Brera where he perfected his talent and skill for painting nudes.

Pino 1939 年11月8 日在巴黎出生，在市艺术学会开始他的学习。1960年他进入了米兰的Brera 的学院，完善了他的裸体油画才能和技术。

objective to evaluate the main points and complications of ct-guided percutaneous pneumocentesis in patients with lung lesions.methods cook 18～21g puncture needle was used to inserting aspiration in the optimal level,situs,angle and depth.and had made of multidrop.fifty-nine patients with lung lesions underwent ct-guided percutaneous pneumocentesis and follow-up.results the successful puncture rate was 100%,accurate diagnose rate was 92%(54/59).conclusion ct-guided pneumocentesis for chest lesion is a efficient and safe diagnostic method.but it is important to improve the doctor′s operating skill to lessen vascular complication.

目的 探讨ct引导下经皮肺穿刺活检的技术要点及并发症。方法采用cook公司18～21g自动弹射活检枪，选择最佳层面、进针点、进针角度和深度，行多点取材。回顾性分析59例肺内病变ct引导下经皮肺穿刺活检术。结果穿刺成功率100%，活检诊断准确率为92%（54/59）。3例发生轻度气胸，2例穿刺后咯血痰。结论 ct引导下经皮肺穿刺活检术成功率高，是安全的，但操作医生熟练的技术方法非常重要，并可以减少并发症的发生。

He soonly improved his skill of singing to a high and mature level, and before long, in some singing contests in his hometown, his songs caught quite a few people by surprise.

他很快就让自己的演唱技巧精进纯熟，不久就在家乡的一些比赛里让不少人对他的歌声为之惊艳。

She possesses all the necessary qualities and abilities that an excellent musician is supposed to have, including wide expression in musical performance, a good command of basic skill, melodic display in accuracy and subtleness, admirable sense of music and profound

她的演奏表现力丰富、基本功扎实，音色纯正清亮、准确细腻，有极好的乐感和敏锐的反应，对不同乐曲有极高的领悟力。

ResultsSubjective symptoms improved in treatment group was 97%, the effective rate was 83% according to AHI decreased ﹥50% after PSG, and those was 89% and 70% in control group respectively.ConclusionU suturation skill can effectively decrease the complication such as disruption of wound or cutting of tissue, enlarge anteroposterior dimension/bilateral dimension behind soft palate, elevate cure rate through UPPP.

此种缝合技术有效地改善了传统缝合技术不可避免的切口裂开、缝线切割等并发症，更为有效地扩大腭后隙的前后径/左右径，减少了因缝合后组织回位造成的治愈率下降问题，提高了UPPP的疗效。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。