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However, tracheal stent implantation is different from esophageal stent implantation. As patients with airway obstruction are always complicated by dyspnea and hypoxemia, even respiratory failure, which increases risk and difficulty of stent implantation. During tracheal stent implantation, the bronchofibroscope or stent entering the stenosis site may lead to complete tracheal obstruction-induced asphyxia. Corrosion of metal wire of stent to airway mucosa and vessels may result in hemorrhea, leading to postoperative hemoptysis. Stent dislocation is mainly caused by inappropriate selection of stent, inappropriate implantation position or severe cough. Carcinoma tissue growing along stent lumens can induce re-obstruction in stent, resulting in atelectasis relapse.

气管及食管支架置入均属有创性治疗，但气管支架置入不同于食管支架置入，气管阻塞患者均有不同程度的呼吸困难和低氧血症，甚至发生呼吸衰竭，加大了支架置入的风险和难度；气管支架置入者，当纤支镜或支架进入狭窄部位时可造成气管的完全阻塞引起窒息；支架金属丝对气管黏膜血管的侵蚀可引起大出血，导致术后咯血；支架移位主要由支架选择不当、置入不到位或剧烈咳嗽引起；癌组织沿支架网眼长入造成支架内再阻塞可引起肺不张复发。

Another difficulty raised is the fact that the peculiar Johannine style is found not only in the narrative portions of the Gospel, but also in the discourses of Jesus and in the words of the Baptist and other personages.

另一个困难提出的是，风格独特的Johannine发现不仅在说明部分的福音，而且在耶稣的话语，在的话会和其他人士。

Another difficulty raised is the fact that the peculiar Johannine style is found not only in the narrative portions of the Gospel, but also in the discourses of Jesus and in the words of the Baptist and other personages.

另一个困难是，所提出的事实，即独特的johannine作风，是发现，不仅在说明部分福音，而且在论述和在耶稣的话，浸会和其他人士。

Inform a native of the desert of Kobi, of the exa ct measure of the parallax of the moon, he finds no satisfaction at all in the information; he wonders how any could take such pains, and lay out such treasures in order to solve so useless a difficulty; but connect it with his happiness, by showing that it improves navigation, that by such an investigation he may have a warmer coat, a better gun, or a finer knife, and he is instantly in raptures at so great an improvement.

告诉戈壁沙漠土人月亮视差的精确测量，他不觉得这个信息能满足他什么需求；他迷惑：为什么会有人肯这么费劲，花这么多钱去解决这么无用的难题。但是如果把这个和他的幸福联系起来的话，向他表明这样做可以改进海上航行，有了这样的更暖的外套、更好的枪或者更棒的刀，立刻，他就会为如此伟大的改良而兴奋。

Then , after testing some senior 1 and senior 2 students from Nanjin Foreign School with FCI test tables,the dissertation concludes:﹡The differcences and similarity among the students'.﹡The presence of the preconcept in the students mind which affects the learning preconccept.﹡The latentness of the preconcept.﹡The similarity between the preconcept in the students'mind and the science history.﹡Preconcept and science concept coexist in students'mind.﹡The difficulty for the traditional teaching to change the preconcept.

然后，笔者用FCI测试量表对南京外国语学校的部分高一和高二学生进行了测试，通过访谈及对测试结果的分析，得出了如下结论：﹡学生的前概念具有个体性和一定的共性；﹡前概念广泛存在于学生头脑中，并严重影响物理概念的学习；﹡学生的前概念具有隐蔽性；﹡学生的前概念与科学发展史上的某些概念存在着相似性；﹡前概念与科学概念并存于学生的头脑中；﹡传统教学很难改变学生的前概念。

Some kinds of stairs in the game, specific the ones in Magister's Terrace and Shattrath, are unable to be walked up normally without difficulty in wow gold .

游戏里的某些阶梯，特别是魔导师平台和沙塔斯城的，没法正常的走上去。

In order to overcome the difficulty in estimating the ripple component on dc-side capacitor reference voltage, the modified control algorithm is proposed by ignoring the ripple component. Furthermore, the relation between control performance and damping coefficient is researched. In addition, the reasons of voltage source converter inner-loop control overmodulation are also analyzed. Based on the relation between control performance and VSC inner-loop input saturation, damping coefficient is adjusted on-line by fuzzy logic reasoning so that the trade-off between control accuracy and limitation of VSC inner-loop control overmodulation is solved preferably.

由于在线计算直流电容指令电压波动量十分困难，在控制方法的执行中忽略波动量的影响，简化了控制方法的实现；此外，该方法还研究了所注入的阻尼大小对控制效果的影响以及APF内层控制过调制产生的原因，针对无源性控制律跟踪精度的要求与内层控制过调制限幅条件间的矛盾，通过构造模糊逻辑推理环节实现阻尼系数的在线调整，在满足内层控制限幅条件下确保跟踪精度和补偿效果。

IT者网站提供英文翻译,未经授权请勿转载】"The state that Yilaikesi is in China at present is a transitional phase, this is the difficulty of provisionality, we will throw bigger resolution in brand strategy, and won't be done only in high end this narrow market."

&伊莱克斯现在在中国的状况是一个过渡性的阶段，这是暂时性的困难，我们将在品牌战略投入更大的决心，并且不会只做中高端这个狭窄的市场。&

In a classic love story, there are two kinds of man. One is the man who has little difficulty in asking women out. He is generally portrayed as being reprehensibly confident in this way.

在经典的爱情故事中，有两种男人：一种男人是经常和女性约会，他们通常被认为过于自大。

At present,along with a new round of health care reforms be carried out in the draft,citizens give it high expectations,but the city of Guangzhou health care reform in the face of low health insurance coverage,the uneven distribution of resources,high medical expenses,"difficulty medical treatment,expensive medical treatment",the tensive relationship between doctors and patients,leading to the embarrassing situation which health care providers and those who demand are not satisfied with,because of improper government intervention and lack of responsibility, medical reform in the process of suffered various setbacks,doctors and patients have become increasingly conspicuous.

目前，随着新一轮医疗改革方案意见稿的进行，群众对医改抱以很大的期望，但广州市医疗改革面对医疗保险覆盖率低，资源分布不均，医疗费用居高不下，&看病难、看病贵&问题，医生与患者之间关系紧张，导致医疗服务供给者及需求者双方均不满意的尴尬局面，由于政府的不当干预及责任缺失使改革举步维艰，在医改过程中遭遇种种挫折，医患矛盾日益突出。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。